yeah, i think he looks less impressive at the weight he is now. In the marquez fight he looked a bit heavier and slower. Probably largely to do with the lay off, but also he's naturally filling out as he gets older.

At any rate, i don't think extra bulk adds any advantages to his style of fighting, it might even slow his reactions down a little and effect his stamina. It could add more punching power but he reputedly has brittle hands so it doesn't give him any advantage he can use there either.