Re people saying Rafa's resume isn't diverse enough / not enough achievements off clay. Rafa's resume off clay is not average by any standards, but it can be considered a "hole" in the sense that is better in other all time greats. But the same can be said about different aspects of every other all time great really. Including Federer.
4-1-7-5 in grand slams is a bit more diverse compared to Nadal's 1-8-2-1. And quite honestly if you take out clay, the H-H between Fed/Nadal isn't as one sided. Yes clay is important and Nadal will always be the king of clay.
Nadal's definitely one of the greatest players of all time but his resume isn't as deep as Fed's at the moment.