Yes, Nani did make a few good crosses but overall, he was really bad. Valencia came in he has already put more efficient crosses, which one of it lead to Rooney's first goal.

Yes, Italian players all mostly can played up to 38, but don't let the age cheat you. Look at Maldini, at the age of 40 that time still playing with Milan. Yes, you can said that he is out of pace but he still have the football brain in his head. Of course those 30+ age players can't chase u with their speed, they will just sit and waiting the opponents to attack them, they will use all their experiences/dirty tricks to mark you out.