Most ex pros I've heard give it Nadal at moment, Agassi, courier, Navratilova, connors, pat cash have all said Nadal. Others say federer although they tend not to elaborate on why unlike those named above.Its the consensus among almost every current and former pro ive heard discuss the matter and also common sense looking at the numbers and distribution of titles, longevitiy, etc.
As I keep saying this debate is ongoing and won't be solved tomorrow whoever wins. In some ways this season has been like a bottled up version of their illustrious careers. Brilliance, but the difference being Nadal has done better in conditions that don't suit him at all. I.e won Beijing finalist in shanghai and r/u in Ao all of which click low bouncing courts. Whereas federer did not play on clay.
Widen that out and Nadal has done better at Wimbledon than Federer has at FO. And then turn it round the other way Nadal was more dominant on his best surface.
Federer has millions who consider him goat, and he has obviously a justifiable claim. But Nadal also has millions who consider him goat and has a claim. The argument will be never ending.
Tomorrow there will be those from both fanbases who will declare goathood for whoever wins which will be obvious nonsense. And I'm pretty confident Nadal will win. But legacy wise tomorrow wont matter hugely but for the prestige of a shanghai title and bragging rights. I'll stand by that if Nadal wins.
The goat debate will never end.