The different shoulders, different percentages, same Nevada rules, same styles, same entertainment value is the same same... As long as only one guy wants to fight and the other "entertain/be chased/ pot shot and hold", nothings changed. Mind as well put abraham vs. Dirrell 2 and broner vs porter 2 on the under card.

For the sake of argument, lets say that manny's shoulder is 200% what it was in the first fight, the only thing it means is floyd would clinch him up twice as much.