Yeah I agree, but I would say with players as talented as Fedalovic they would adapt their games to whatever conditions. Nadal is not going to adapt to fast courts as he is better off winning clay and having some success everywhere. Fed is not going to adapt to clay as he is better off doing what he is doing. Novak is fine the way he is. However, if they went 20 years ago they would all HAVE to adapt and they are talented enough to do so plus never would have ended up how they are now.... Nadal would not be a topspin hitter etc hed be serving and volleying
But thats not what we are talking about, forced adapatations, we are on about the lesser adaptations players need to win on all surfaces, ages etc.
For this we all know, and it is not even close, fed is the most adaptable and complete player it is not even a contest. He has played in nearly four eras now, genuinely switched up from s+v to baseline to his current style which NO ONE ON TOUR plays. He has survived string changes, surface changes, multiple GOAT canididates who are 5 years younger, won on blue clay lol. He has won young, peak and old. He has survived surgeries, back troubles and 4 kids and marriage, who knows if rumours are true but other players have struggled with that side of things. So no contest - Fed. If tennis was played on ice and in skates I'd trust Fed to adapt and excel a heck of a lot more than I would trust Novak or Nadal.