Among analysts, "he's the bigger fighter" and "the size is going to make a big difference in this fight" seems to be a common talking point when predicting/analyzing fights these days. When weight classes exist, why is this such a significant factor in fights? What is the point of having weight classes if we so frequently see, come fight night, that one fighter is significantly larger than their opponent? If size is a determining factor when it comes to fights, perhaps the existing weight classes are too large and allow too much allowance in weight disparity. Nothing is proven if at the end of the fight, the winner boasts "I was the bigger fighter" and, if the loser also says "he was the bigger fighter".