Why are people so obsessed with what would happen to a boxer in a street fight or in an mma match.. It's ridiculous.. They are boxers. No legit boxer has or ever will leave boxing either. It pays too good, and comes with much more prestige and class at the upper echelon.
It's s simple anyways. Boxer wins in boxing. MMA'er wins in MMA. Boxer wins in street fight if MMA gy doesnt know he's a boxer, and MMA guy wins if he does know. It's all mythical fanyasy bs anyways.
What I will say though is a boxer, who has already mastered his game has a much better chance at entering MMA then someome from MMA coming into boxing. You don't beat a master at his own game, but you can always get a good punch off against a guy who is good/average at multiple disciplines. Especially if it's a stand up fighter.