Well as you are writing too long and its getting more and more confusing, let's just break it down on the following:
He carried Real Madrid, "almost" all by himself is merely description on how important he was for Real Madrid during 16-17 CL run, sure no one can carried the team all by himself, not even Maradona, but you get the point, he is most impactful player during that run, and probably in any other football competition bar Maradona in 86 WC, no need to dwell too much on the exact wording used.
Sure Juventus was weaker than Real Madrid, and Ronaldo still need a good team to support him for winning CL, but he was also 34 and 35 in last 2 years he played for Juventus, lets not forget that. Expecting him to win CL "on his own" for Juventus at this age is quite unrealistic, to be fair. He did have some great matches though, scoring hattrick against Althetico last season was magical, even Messi and Pep, his long term rivals, both very impressed openly praised his hattrick feat. And this year even they went out losing against Lyon, he also scored all of Juventus goals in knockout stages, he is true fighter in that sense.
Sure, but prior to WC, Ronaldo is the favourite to win Ballon D'or out of his CL performances, I am pretty sure on that. The WC changes everything, Modric got it in the end, mostly for his WC performances, although I don't think he is good enough to be among top 5-10 prior to WC. But WC is WC.
Now this is the part I agree, and disagree with. The part I agree - impact on winning games by how can raise a team's overall play/chances to win, I think no other player is better than Ronaldo in CL in this respect. The part I don't agree with - for you its more about dribbling and playmaking, but for me, its about how his overall presence on the pitch are more likely to win games for his team. Goals is of course a big part, but the goals he scored are not just icing on the cake type of goals, for example, bicycling kick vs Juventus etc Those goals are truly individual brilliance or important goals. He never give up fighting on the pitch, even in most adverse situation he scores. And his teammates could only rely on him scoring goals to win the match on many occasions. His 16-17 run is example of that. Its not just about goals, but also about his determination, keep making runs and finding space to shoot, driving his teammates forward to attack, encourage his teammates during adverse situation, making correct decision on the pitch, and performing his best and always delivered in the most crucial moment etc These are often the biggest difference between winning or losing, and this is how he impact his team and raising his team overall chances to win too, and no one does it better than him in this respect, especially in CL history.
Again you are just missing my whole point - Messi never won any international trophies, how does it have anything to do with "impact on winning"? Sure you have to "win" it first, in order to claim having impact of "winning"? Hypothetically speaking, if he loss every matches but have big impact in all the games he played, you can't really say he has big impact on "winning", can you? He surely has big "impact" on many matches he played, or maybe lets say winning some games in group stages against minor teams during WC? But he didn't score goals or contribute much in winning games in the knockout stages (Argentina progress during knockout stages mainly due to their defence, not Messi though), and he surely didn't win the WC, did he? At best you can say he is best player in group stages, or something. But surely not best player in WC from his impact on winning, and definitely not from the knockout stages onwards.
No he did not carry RM "almost all by himself", why persist with that? He scored half of their goals in the knockout stages and wasn't the main player in any of the other phases of the game. That RM team had plenty of other excellent players who contributed greatly to their victory. We do need to dwell on the wording used because it paints a picture that doesn't reflect reality at all.
Your reasoning is all over the place, it's not even internally consistent. Ronaldo needs a good team to win the CL? But aren't you saying he wins "all by himself" and crediting team wins as if they were his own? Then you say the reason we can't expect him to win at Juventus "by himself" is his age. So you're saying the reason his results haven't been as good with Juventus is his age and if he was younger he'd win all by himself? I can't figure out what point you're trying to make here. So he's had magical performances and is a true fighter even though he lost, but just a few lines after you claim Messi can't have had any impact on winning internationally since he didn't actually win anything. So do losing performances count or not?
Can you settle on one narrative here? So did Juventus lose because (a) Ronaldo no longer has an impact on winning in the CL and (b) individual players on Lyon and Ajax just have superior impact or (c) crazy idea here, but maybe football is not a 1 vs 1 sport and there's a myriad of factors deciding who wins matches and tournaments and therefore team victories can't be attributed to one players. Nah, too crazy, right?
You can absolute have the biggest impact on the game while not winning. There's 21 other players on the pitch, all of them making an impact as well. Football matches are not a referendum on which team has the best player.
The part I bolded, I strongly disagree with but I respect it; if you believe Ronaldo raises his team's chances of winning more than Messi because of those factors, fair enough. I do believe Messi's superior and far more diverse skills on the ball make him the more valuable player, but then again there's no way to prove this is a fact.
1) It's not more goals, it's more than twice the goals in the most difficult rounds in CL. There is more than just a subtle difference there and, without being a definite proof of anything as you rightly said, it probably adds more useful information than resorting to false analogies.
2) The context of the discussion was performance in CL, not the overall career. I want to make that clear.
3) If a Cyborg whose main ability was to guarantee 3 goals per game in spite of never contributing to the build up happened to storm the Champions League everyone would refer to him as the footballer with the biggest influence on that competition. Point being, when a footballer is complete that is desirable, but volume in one department can make the difference.
4) I'm still waiting for someone to tell me their opinion on Messi's contribution in the knockouts where Barcelona was eliminated.
A helping hand to remember which games I'm referring to can be seen below:
1) Why are the analogies false? If we decide raw scoring stats are the best barometer to decide who the best player is, why would we not apply that same standard to other comparisons? Why are raw scoring numbers the deciding factor in this one specific comparison but not in others?
3) Unless that guy was capable of literally capable of stealing the ball from the opposition and score without any help from teammates, that scenario would never exist no matter how good a player is. Weren't you just complaining about false analogies? This is an actual example of one. If you're guaranteed to score 3 goals in a match no matter what, then who cares about build up? Ronaldo's goals, however, aren't guaranteed, he finishes those plays, but others have to create them.
4) This is Messi/Ronaldo stan on Twitter level of ridiculous, sorry to say. You can do much better than this. Are you seriously listing ties where Messi didn't score (with no further information given about his performance) and asking people to explain. Well then, explain to me these ties:
2007 R16 - Manchester United 2-0 Lille (0 goals)
2008 SF - Manchester United 1-0 Barcelona (0 goals, 1 penalty missed)
2009 F - Barcelona 2-0 Manchester United (0 goals)
2011 R16 - Real Madrid 4-1 Lyon (0 goals)
2011 SF - Barcelona 3-1 Real Madrid (0 goals)
2015 QF - Real Madrid 1-0 Atletico Madrid (0 goals)
2016 SF - Real Madrid 1-0 Manchester City (0 goals)
2016 F - Real Madrid 1-1 Atletico Madrid (0 goals)
2017 R16 - Real Madrid 6-2 Napoli (0 goals)
2018 SF - Real Madrid 4-3 Bayern (0 goals)
2018 F - Real Madrid 3-1 Liverpool (0 goals)
Please explain to me his performances in all these ties where he either lost or had to be bailed out by his teammates while doing nothing! Or... better yet, seriously reconsider you method of analysis. Everyone is a bottler if we pick games/ties where they didn't score and ask why they didn't.