Not even close, Mayweather will embarrass him.
In boxing, there's very little doubt that Mayweather would win, minus a fluke shot placed by McGregor.
Amazing to see how many MMA fans think Conor will win with ease. It Conor wins, it will be a fluke shot - but Conor won't outbox Mayweather.
If you reverse the scenario, Floyd would lose in MMA.
This fight might be made for the money and spectacle, but the odds of it being competitive are very low.