At the very least, we see what Chavez Jr can take. He seems to have a good chin, but certainly hasn't been tested against a true puncher like Mugabi. That said, he's much bigger - height and natural body weight - and would probably have 20 lb. on him by fight night. Tough to say he wins here, but pretending they'd actually fight (since Arum would never allow it in reality), could get interesting if it goes all 12/15.