No, not in terms of 'spike differential', but for his age he certainly does stand out, just in terms of 'HR reached'. well, maybe just to play devil's advocate, Ruth (and maybe not even Aaron) wasn't exactly hitting the weight room every day like Bonds and players today do or hiring traveling dietitians and cooks. we know a ton more today about maintaining athletic longevity than even 20 years ago, so to see Bonds maintaining his production four or so years beyond what Aaron or Ruth did can't be unreasonable. and then you can take it from the flip side, too. that because athletes are more physically refined, it takes longer for the player to begin a Major League career. On the chart, those guys broke in at around 20, but Bonds took three years longer, and it's not a tough stretch to say that he has just as much natural talent.