i think all the history were too much for fed, i daresay he played his first two sets out of instincts and emotions, rather than a clear game plan. after the rain delay, he came out and started to rip it up. but once it got tight again in the fifth set, he got a bit overwhelmed by what could have been, and lost his way for 10min - unfortunately for him, it was the last 10 min. credit to nadal though, some of his backhand passes were insane. fully deserved it.
agassi in his hay days will rip apart nadal in 3 sets straight, simply because his ability to hit the ball on the raise like breathing will negate nadal's top spin. fed, on the other hand, has amazing angles with his shots, so it might present agassi with a tough challenge. if sampras managed to win 13 odd grand slams at the presence of agassi and co, he is without doubt the greatest of them all.
i think till the day fed can win at roland garros, his name won't shine as much as the others, like rod laver.