The problem for Bonds and Clemens, versus other players like McGwire, is legal. McGwire never denied it in a legal setting, while Bonds denied use under oath to the Feds, and Clemens denied under oath to the Congress and brought a lawsuit based on the claims he never used. The two have painted themselves into a corner, as, even if they wanted to admit to using PEDs and come blean, they can't as they would be in big legal trouble.