What you typically see is that gross weight moved is maxed by large body mass, but that a higher weight to strength ratio is common in smaller guys.

I train with a 400lb semi-pro football lineman. "Big Tim" can absolutely manhandle a 300lb log press. Which is all fine and dandy becasue that is 75% of his bodyweight. By comparison I can also manhandle a 150lb log, and I would be willing to bet that I can knock out more reps than he can at 300lbs. We aren't talking about a weak guy, he is athletic and strong. But while his body mass allows for some benefit, it is also a liability.

Look at top end lifts in any sport and compare ratios in weight classes. The above statements become VERY obvious.