for me , yes , they took the tennis into another level.....
more far of the classic tennis and into in a very physicall tennis and with very long rallys like robots.
I miss a lot the kind of tennis of sampras , agassi , edberg or the best roger
Yes, but there are reasons for that. A short list:
Court homogenization. Too slow courts.
Even Paris-Bercy and Wimbledon are relatively slow nowadays.
Balls. Heavy balls, not so fast as in years before.
Athletisism. Both are fantastic athletes.
Fitness & condition. They can play for 4 or 5 hours like Murray, Wawrinka or other players. The new generation is in general more fit.
Defense. Defensive shots, passing shots, returns.
They can do all those shots so well that the offensive player won't have much success and can't play his tennis for more than 2 sets.
Best of five sets.
Everything is different with Best-of-three sets.
So, both are incredible.
Fantastic tennis players.
Fantastic in defensive, the two best players of all time in terms of defense.
But with Best-of-3 on a fast hard court (or grass court) everything could be different.
Or Blue Clay Court.