I know this is not about "reality" - but in this case the analogy works.
just to best your analogy (anal lol
)
dude a works out every day lifting weights. he eats and lifts heavy things and eats again, and he can kill you by just sitting on you.
dude b works out every day. but he also trains his combat skills. he becomes strong, but never at cost of his technique training.
dude c is jet lee. he does his crazy fast fighing shit, has a high str/bodywheight ratio but if it comes to hurt guy a, he rly needs sth pointy or otherwise dude a wont feel the punch go through his fat.
so, just aside of this working great for crpg - its kinda true in reality as well.