The pay difference is bullshit. I think the only reason is that boxing has been a renowned sport for a long ass time. MMA was a small organization when it started, the popularity of it nowa-days should factor in and them pay their fighter better. Brutal picture!
What's even more crazy, a lot of MMA organizations don't fully cover your medical or dont bother at all which is fucked up when your getting like $10,000 or less