Mayweather for this match because it is boxing. Although we cannot disregard mcgregor as a boxing artist too. Pretty exciting match-up.
You have to understand one thing,McGregor is going to fight professionally for the first time in his career boxing career and that too against a fighter who is 49 and 0. The notion that McGregor is a boxing artist is quite laughable,he is a MMA fighter and not a boxer even at the amateur level. 