I''ve been saying for years that a player wins as much as his teams "carries" him to, not the other way around.
I've seen both players try their hardest, at their peak, and lose, some of their best games have happened in defeats, that's why I'm against the whole "Now Ronaldo is the best UCL player ever" thing, he wasn't it before, and he isn't it now that he scores for fun while being 80% of the player he was years ago, thanks to a squad that's basically at the level Barcelona had from 2008 to 2012, but with better subs.
I can't get your point with replies like the one you just made, to say that Ronaldo is better either at general level or UCL, that he's won more lately? We can't disregard what a big part of that lies on his teammates, same way everyone could think after 2011 that Messi would have 8 UCL titles by 2020, or that the MSN looked great to nail the first repeat in UCL history, yet it never happened, because other team got stacked.
There's kind of a romantic moral in the notion that the best season any player has ever had (Leo's 73 goals) was destroyed by a missed penalty against Di Matteo's Chelsea, and 9 points behind Real Madrid in the league
I don't think that any other example in football history shows better the struggle between the best effort ever, individually-wise, and the fact that any year or even whole careers can be skewed up by team performances, which are 90% out of your control. The reason I think Leo is the best player ever (from which I've seen with my eyes) it's because no other comes closer to him in the art of an individual infliuencing a team-oriented game.
At team sports of the highest level, the only thing above Leo I've seen is what LeBron did on his Cavs title season vs the Warriors, and it's not even the same, he also got help (like Leo from teammates, of course), but it's just 5v5, not 11v11.