Well, I have a number of comments:
1) My frustration watching the US Open final has been off-set to some degree by seeing Michael Vick's terrific play on Monday Night Football. I am definitively winning a bet about that with someone, so that is satisfying.
2) You have to give credit to Nadal for his physicality, stamina, mental persistence, and ball-striking. You can't keep the ball in the court that often without having a great feel for the ball. I compliment Nalbandian for ball-striking. He may be the best, but Nadal is an excellent ball-striker as well.
3) Djokovic is a better shotmaker than Nadal. He lost the match in 4 sets but still had double the winners.
4) Djokovic's tentative and lackluster first set was absolutely inexcusable, especially in light of what happened in Canada a couple weeks ago.
5) When Djokovic opened up his groundstrokes and got aggressive, he was making Nadal look like a junior player. He was hitting flat and had Nadal running all over the place.
6) Nadal's stamina and persistence are incredible. McEnroe was stupid to say that "Nadal was really up against it" early in the third set just because he fell behind a break. No McEnroe, Djokovic was the one who was still up against it - not because of tennis, but because of Nadal's incredible stamina and unique mental profile.
7) The way Nadal saved the break point at 0-2 in the third and then of course the break points at 0-40, 4-4 in the third illustrated what separates him: not tennis, but persistence, intensity, concentration, constancy, and consistency. This is the Kieran insight, and I agree with him.
8) The better tennis player lost. The more fit man, the bizarre specimen that is Nadal won.