The greatest weapon or tool above all is the mind. Floyd is more brilliant inside and outside of the ring.
It's the chin. Pac can take a punch right on the chin and...I'm lying, wait. I meant that Floyd can get hit right on the button and disappear. Pac??? Well here's proof that Pac takes a good shot! http://youtu.be/UGJFlo7M2Ws http://youtu.be/aMJJB9GlV84
pacs chin has been tested for 20 years facing bigger guys and him being a attacking fighter to only go down once to the head in nearly 70 fights and that shot was a freak shot......................pac has taken 1000 flush shots to the head duckweather has taken 5 and has wobbled in each one of them his chin has not been tested enough
But we've seen a 'tiring' Pacquiao in the ring where he started to look sluggish (Bradley I, Shane Mosley with cramping). You've rarely, if ever, seen Mayweather wearing down. He actually gets stronger through the middle to end rounds. Not sure this is an advantage for Pac.