Ah, I will not have time to write a post about it. It's more a feeling, although I wouldn't bet on it. Everyone will lose eventually in boxing, not because they're not good, but because of their age. I'm not sure if now's that time for Mayweather, but the age difference is pretty big, and I think it will matter. Also, McGregor is stronger, with a higher chance of providing one hit to take the opponent down.
These were all arguments for McGregor, but Mayweather should still have technique and speed on his side.
Also, every boxing man I saw talking about this match said that Mayweather, and they know waaay more than I do, so maybe the gap is bigger than I thought.