not technically at all mate, sorry about that. in hard courts its not just pure cement (or whatever the material is) anymore, in which the bounce was much much faster and lower, which favoured aggressive/ serve&volley styles. on top of that balls have got bigger and get more swollen through play. this favours audience, sponsors and overall people who would not watch tennis in the first stance. i still think novak is the goat nonetheless. andy was me favourite but hip injuries are carreer ending