One of the best QF in history? LOL. Just because it went 5 doesn't make it some huge classic. It was far from it, Rafa clearly far from his best game and going up against a guy who doesn't have much game off clay. It had its moments of brilliance but you had a guy normally rock steady (Nadal) make some stunning errors to make it a match. Anyways people calling this one of the best matches ever are just slaves of the moment.
Nadal won his first major in 2005 and at that time the count was 4-1. So since the end of RG 05 it is 16-16 and that's Nadal age 19-32 and Roger 24-37. I guess young Nadal was no competition but an ancient Federer is? I mean look at the tour the last 1.5 years, Nadal's only notable competition was a 36-37 year old part-time player before Nole's recent resurgence. When Roger was in his early 30's he had Nole, Rafa and Murray all in their primes. Right now there is no good young player on tour, not a single one.
Besides, greatness is about achievements and Roger still dwarves Nadal's career as of now. But you can and will tell yourself what you want to believe.