Thats whats getting lost in the debate. I said it before, on average a Boxer will be better at punching within the confines of a BOXING MATCH under BOXING RULES and better at taking punches than an MMA fighter.
Its simple, if all you train is your punches and techniques, and all you do is get hit over and over with punches then you will be better at those things than someone who trains boxing, kicking, wrestling, submissions, etc...
This fight proved it. CM landed a few shots and it was like FM was being tapped on the shoulder. BOXERS are meant to take 100's of punches over 12 rounds. Same with his punches. Once FM decided to turn it on that was the end for Connor he couldn't survive getting hit over and over again. In MMA you might take a few shots, but then you have kicks and grappling to break it up. Boxing its just punch after punch.