The other way of looking at this is that Nadal is a brilliant clay courter who couldn't achieve the same level on other surfaces in slams.
Borg's six FOs and five Ws is better than seven FOs and two Ws.
Originally Posted by RAFA2005RG
Federer is not the king of any of the slams. None. The Australian Open leadership is shared by Agassi, Djokovic and Federer. Roland Garros is owned by Nadal, outright. Wimbledon is shared by Sampras and Federer. US Open is shared by several. The only GOAT of a slam event is Nadal. The others are shared. That's a big hole in Federer's CV, the fact he doesn't own a slam event. Also, Nadal has won at least 2 slams on clay, grass and hardcourt. Federer hasn't. Another big hole in the Federer CV. Federer almost doesn't even have the Career Grand Slam. Nadal gifted him that in 2009, as we know Federer would never have beaten Nadal at Roland Garros.