Perfect, so then, the particular source of martials' power shouldn't matter so long as the resulting capabilities are one or both of:
A. Comparable in scope/impact to what other PCs are doing
B. Finite in quantity.
Correct?
As long as you can't break the game all time, call it absorbed cosmic radiation, god juice, mutant powers, dragon blood, or just plain old-fashioned grit..
It all works.