that is a great post general:
I think you are spot on. they dont quite have the movement of the top guns and then they don't quite believe either.
they can overcome the movement issue to some extent with their enormous power off the ground. especially on quicker courts:
you just try to dictate rather than letting the top guns dictate.
and you do have to be able to produce in the clutch. there is a way to do that also. just double your hours on the practice courts.
as jimmy Connors says, make the sacrifices.
berdych is nearly 6 foot 6. he has zero excuse for not having a far more dominating serve.