As strange as it sounds, I would take a bad decision after a great, entertaining fight rather than a correct decision after a mind-numbingly boring fight. The whole damn world is watching this event, it needs to deliver on the entertainment front first and foremost, in my mind. A bad decision after a great fight, while unfortunate, could fuel interest and demand for a rematch, hypothetically. So, it wouldn't necessarily be a total loss. A terrible decision after a terrible fight would be the worst case scenario, along with a clash of heads, early night kind of thing.
Sadly, if Floyd wins in any manner, many Pac fans will say it was fixed. Literally, any way and they will claim it wasn't legit.