I don't think so. It depends on which timeline you buy. One popular timeline, and the one I tend to ascribe to, is that Clemens started using following his exile from Boston, at which point he became the best pitcher on the planet with two straight Cy Young Awards and 162 wins in his post-Boston career. If he's the pitcher Boston thought he was at that point, he has (generously) 50 wins left in that arm. He's a Hall of Famer, perhaps, but a borderline one. A similar popular timeline has Bonds beginning his juice diet following the 1998 season. He's got an incredible streak going of seven straight four-digit OPS seasons, but he's grown bitter with the attention received by the home run record chase between juicemongers Mark McGwire and Sammy Sosa. He's already a clearcut Hall of Famer. And he's still at a lofty perch to amass some further great seasons during his decline. Bonds has a much stronger case by this measure. Conveniently, both these changes occur at the age 33-34 border, but... Barry Bonds through age 33 has a best comp of Frank Robinson, and it's not even that strong, with a similarity score of 868 out of 1000. Roger Clemens through the same timeline has a best comp of Dwight Gooden (944 out of 1000), who ain't in no Hall of Fame. It's only from that point forward he starts turning into Tom Seaver.