MMA fighters are obviously better 'fighters', there's really no debate about that. So not sure why you'd mention that.
I'm amused by the notion that people are so sure he's going to wreck Floyd in a boxing match. It's certainly possible. He has significant advantages in size, power and age going for him, which makes it perhaps interesting. But despite that, how are people so convinced that an MMA fighter will transition to boxing so easily?
I completely disagree that boxing is just fighting. They're utterly different sports from whatever little I know.
Floyd has boxed since he was like 5 years old. His footwork, handspeed and defence are all muscle memory.
Conor is a brawler with a devastating left hand, but he fights people in an open cage, without many restrictions or rules. He uses a combination of leg kicks, flying knees, roundhouse kicks, and grapples to unbalance opponents and get his strikes off. And even when he does strike, he often relies on blows on top of the head to finish his opponent off. And people think that he'll just come and land a single punch KO on Floyd?
How will he drop Floyd's guard without his leg kicks, flying knees and grapples? How will he create space and angles in a smaller ring? How will he avoid Mayweather's repeated jabs to his face? How will he avoid getting socked with power shots when he winds up for those really slow looking upper cuts? And more than anything, how the hell will he have the stamina to last 12 rounds against Floyd when he has stamina issues in the MMA?