Not gonna quote everybody, because you're all essentially saying the same thing. I'm standing by what I say, CR7 was a goalscoring machine in '08 and still has less contributions than Mbappe over the season (with Mbappe still having games to play).
PSG may be the 'best' team in France, it's a far more dysfunctional side than United was in '08. Also give me a break about the Premier League, which has always been filled with garbage teams at the time that United and CR7 feasted on (and he got the flat-track bully criticism until he started scoring the big goals in the CL). Most of the PL's teams are as poor as any other league out there, and that's where CR7 got most of his goals from that season. If I remember right, he only had something like 3 goals against the top 4 sides that season.
PSG didn't even get to feast on the weak opponents this season (outside of their last two games) because they have been an absolute mess under Pochettino, and despite that Mbappe has been far more impactful his goals were worth more to PSG's success than CR7's were to United's, especially with Messi and Neymar not pulling their weight.
CR7 didn't even get to the amount of goals Mbappe has now in the CL until the age of 27. I get he's a legend and everything, but you're way off if you think Mbappe isn't at least as good as he was then, I actually think it's insulting to Mbappe, not the other way around.
At 23 years old, I can say CR7 was a superior header and taker of free-kicks, everything else I'm siding with Mbappe over him, speed, finishing, intelligence, passing, dribbling is debatable I guess.