I think Floyd's lead hook to the body is better than Pac's as well. I hope he doesn't catch him with a lucky liver shot.
Floyd's is quicker and probably has a tad more pop, debatable. The difference maker here is the reach. If Floyd establishes a good range, Pac might have trouble landing his shots.
Floyd's throws every punch better than Pacquiao, Manny hits harder but Floyd's form gives him the advantage even offensively
Mannys left hook is faster , harder and better thrown than Floyds. However this is not the most important punch in the fight.
its about the same or maybe slightly in favor for Mayweather but these are all eye test so it's subjective.. the difference though, Mayweather rarely throw his leaping left hook against a southpaw.. correct me if i'm wrong but i never saw that punch when he fought Zab.. i guess the reason is because when in southpaw stance the right chin is well protected by the lead right hand.. hence left and right hook for both will only be effective for countering a jab.. now this is where speed and quick footwork comes into play.. whoever has the advantage will have the advantage over the other when it comes to this punch....