I don't see why an unusually heroic HUMAN couldn't be as tough and strong as a caveman. In dominions it seems impossible.
I see those on Smackdown all the time... big strong men that is... heroic... well..
Or why an unusually heroic superCaveman couldn't be pretty close to a giant, etc.
Traditionally this problem is solved with dice in RPGs. Human has attributes between 3 and 18 or something similiar. In Dominions all humans are bound to 10. Why must even the heroes be clones of the ordinary crap militia-humans?:/ Yes, slight exaggerations here but you get the point.