Banned substances.
Shane looked like a monster against Marg, but against Floyd he gassed after 4 rounds and didn't have anything to give.
The same would happen with Pacquiao, if he takes the tests.
This Mosley is as cheater as Margarito, one had ilegal handwraps and the other has eaten indetectable 5th generation PEDS, HGH and other shit...
Shame on both of them...