Compare pics of McGuire when he was a rookie and when he retired..Very little difference...Do the same with Bonds,Brady,Sosa..etal, there is a huge difference. McGuire has been a bona fide home run hitter since day one, the others no way. McGuire's rookie season, he had 35 dingers at the All-Star break. Just to be clear, I am not saying that McGuire did or didn't do steroids or excusing it if he did, Im just saying that McGuire did not change physically like the others did, he's always been huge and always a power hitter.
