I'm buying the fight, a match up like this has not been done before, and it seems entertaining to me. However, let's be honest, there isn't a change McGregor wins this. They are billing it as a competitive matchup, but it will only be one sided.
Basically, McGregor will be a slow, awkward, amateur fighter in the boxing ring as he faces one of the greatest boxers of all time... as would Floyd in an MMA octagon.
It's the hand speed, foot speed, and accuracy that will be the overwhelming and dominating factor. People are ignoring or underestimating this skill set, these take a long time to acquire.
This isn't a bar fight, it's a finesse and artistic match with rules that McGregor can't properly prepare for in under a decade.
A no rules bare-fisted fight is what would be the true equalizer, this is what people are expecting. It won't happen and never will.
image source: TMZ
My Prediction:
Mayweather wins KO in 5 rounds or less.
My BOLD Prediction:
As McGregor swings wildly attempting to land a knockout blow, Mayweather in round 1 with a knockout counter-punch.