Utter BS. Using that 'logic' neither Fed nor Djoko could be GOAT given the overly negatively skewed clay stats.honestly Djokovic is so close now I dont think Federer has a chance, Novak winning one more slam will probably seal it in my mind, but Roger would still be ahead of Nadal given the overly skewed clay stats. Nadal is still ahead of Laver, Rosewall, Sampras, Borg etc. but not Federer or Djokovic IMO.
In fact Rafa is the current GOAT already, being the only one of the Big3 with multiple slams on each surface.