#5 Ronaldo keeps his head better under pressure
Ronaldo quite often cuts a frustrated figure out on the pitch, usually when a teammate has dared not pass to him inside the penalty area, but that rarely spills over into confrontations with opponents or has an effect on his game the next time he receives the ball.
Neymar, however, has a history of getting drawn into needless scuffles with opponents. He received 12 yellow cards and one red card across league and Champions League action with Barcelona last season, and he has already accumulated five yellow cards and one red with PSG in Ligue 1 this time around, despite the clear advantage his side enjoy over most opponents.
The Brazilian can also tend towards individualism when things aren’t going his or his team’s way.
The two matches against Madrid are undoubtedly the biggest Neymar has faced since moving to PSG. If things take a turn for the worse early on in the tie, it wouldn’t be surprising at all if his emotion gets the better of him and thus hinders his hopes of outperforming Ronaldo.