I just don't like Mayweather's style of boxing. Fighting a defensive fight, is just too pussy to me.
I agree, but that is the skill that doesn't fall away with age. And he's fought some amazingly strong offensive fighters that spent years perfecting their boxing craft and made them look like they were just flailing around at him pointlessly.
The ONLY way I see Mayweather losing this fight is he stops trying to win it and starts trying to show off and gets dropped by a lucky shot. But a LOT of great boxers have taken a LOT of lucky shots and haven't won, so I don't think a rookie to the sport will.