And? Shane Mosley never failed a commissioned drug test in his life, but he's a proven/admitted steroid user. Just because there's no definitive proof that margs did use wraps versus Cotto doesn't mean he didn't. If you watch the fight, and margs future fights/Cotto's past fights, it makes much more sense that margs was using the wraps.
pac was/is on ped's. Leakage will come somewhere down the line.