Re: Does size matter....ok we know it does...so more in mma, or boxing
MMA, unfortunately, has the wrestling weight-cutting mentality. Kids die every year cutting weight in wrestling. With that being said, I'm not sure which sport size really matters more, per se. But MMA is definitely more geared towards gaining any size advantage, possible.
Boxing: With age, boxers go up in weight.
MMA: James Irving kills himself draining down to 185lbs.