Rooting for Manny.
1) Mayweather, love him or hate him, is one of the most technical/tactical boxers.
2) It would be hard to beat Mayweather on points in Vegas, which means Manny would have to TKO/KO Mayweather.
3) Mayweather is incredibly hard to knock out.
Several boxers had said the same prior to the fight, and it came to be. Manny had to knock out Mayweather, and that is hard to do.