Nadal still has the superior h2h, but the sustained period of domination Djokovic had over him in big matches for the last year (till Monte Carlo 2012) has clearly been a big blow to Nadal's legacy.
Yet...it could all be a blessing in disguise, if Nadal manages to do what other GOAT canidates (namely Borg and Federer) did not, and find a way to consistently beat a guy who neutralised their game, on the biggest stage. Borg could not overcome McEnroe and quit (arguably to secure his legacy). Federer never quit, but he was unable to beat Nadal in slams.
Nadal seems a different animal from either Borg or Federer. Unlike Borg, there's no "quit" in him. And while Nadal is capable of having a mental block against his nemesis in Djokovic, he truly seems more likely to overcome it, than Federer was against Nadal.
After early slam wins, Borg and Fedrerer were never able to defeat their main rivals at slams again. Nadal seems perfectly capable of overcoming that jinx. If he does, I think it arguably strengthens his case for greatness, especially since Djokovic is clearly an all-time great player (maybe not GOAT canidate yet, but certainly in a tier with the likes of McEnroe).
Yet...it could all be a blessing in disguise, if Nadal manages to do what other GOAT canidates (namely Borg and Federer) did not, and find a way to consistently beat a guy who neutralised their game, on the biggest stage. Borg could not overcome McEnroe and quit (arguably to secure his legacy). Federer never quit, but he was unable to beat Nadal in slams.
Nadal seems a different animal from either Borg or Federer. Unlike Borg, there's no "quit" in him. And while Nadal is capable of having a mental block against his nemesis in Djokovic, he truly seems more likely to overcome it, than Federer was against Nadal.
After early slam wins, Borg and Fedrerer were never able to defeat their main rivals at slams again. Nadal seems perfectly capable of overcoming that jinx. If he does, I think it arguably strengthens his case for greatness, especially since Djokovic is clearly an all-time great player (maybe not GOAT canidate yet, but certainly in a tier with the likes of McEnroe).