The fighters would still be as clumsy as hell trying to use skills they don't have stats for.

This is my #1 problem with the game, style match up's matter more then how well trained you are in those styles. If two fighters are trained equally in their respective styles then fine, but that's never the case.

And regarding pure weight, pure weight isn't as important as it is in the game, if it was Butter bean would always win.