Let me ask you this..if Rocky had won that fight would you feel he "owed" MAB a rematch? Your ansewr is probably yes b/c MAB was the champ and is an established legend. I'd argue these are the same reasons MAB owes it to him. He barely won a controversial decision and owes it to Rocky let him prove whos is the better fighter. I think if you are the champ and have a close decision that could have gone either way you owe it to yourself the other guy and the fans to do it again and find out who really should have won. These are the fights that make history.