I think the hype is easily going to be the best part of this fight.
ODH is bloody old and slow compared to his younger years but he will weigh around a stone more than PBF come fight time. He is stronger but PBF is fitter and much faster.
I see a points decision to PBF.
Or a rip off money maker decision given to ODH complete with a return bout.

Mayweather is fighting a shadow of ODH in his prime and it's a shame because Mayweather is a fantastic boxer.
He should be fighting Cotto and Hatton but they don't offer anywhere near the kind of money that will come from fighting an old ODH.
Fight of the century?
More like Fight of the weekend.
It will be worth watching but I can't see ODH catching Mayweather and I can't see PBF hurting ODH but comfortably coasting to a points win over another old opponent.