Ok so i always read on here how there are fighters in weight classes below heavy weight that are "big" for their weight class. So from what ive taken in people say they are big because they cut like 30lbs to get to the weight they fight at. But when they step on that scale they weigh the same as the man they are about to fight. everyone talks about how much bigger the other guy comes into the fight. How is this possible if they both weigh the same 1 day before??? I feel at the MOST these guys will gain back in a day is MAYBE 10lbs if that. So how do you have a size advantage? why not fight at a more comfortable natural weight?