In my opinion that % counting make no sense. So if for example dl has 50 % speed and enemy amr has 340%so in reality that dl has no chance against amr but not in this game and i dont know why. Just do it as in fifa series 1-100 but of course it must be pretty hard to get that number(for example from 35 to 37). That could fix all mutants all 1% skills and etc.