No it depends on the player. If the player is a high quality player, he/she can adapt to any situation at any time.
Tennis is now more than just about tennis. Fitness is hugely important now. Some people are just freaks of nature, Nadal for example. If a player is talented but runs out of gas easily then they are pretty much screwed, example Djokovic and Murray. These 2 have worked on their fitness over the years and have thus rose up the rankings. Young players do not have the stamina to guts it out for hour after hour. Gone are the days of cheap points on serve for most, it is now about bruising rally after bruising rally.