Sport
G.O.A.T.
There is no other option but to ignore speculative and untestable scenarios. Otherwise, I could say "hard to ignore how many Wimbledon titles would have won Laver against Federer and Djokovic". Then I could say that Laver would have won 0 Wimbledon titles against Federer and Djokovic, while Nadal would have 5 Wimbledon titles without Federer and Djokovic. Therefore, Nadal > Laver on grass. See the dangers of untestable speculation?hard to ignore that how many wins he would have playing against nadal)
3 >1. Kuerten, Lendl and Wilander are all of them better on clay than Federer. And 4 > 2. Laver is better on grass than Nadal.
Untestable argument= not valid.