@Buddy Boyo what are your thoughts on my idea? I posted it in pizza sans rate me thread
Klinefelters males have extreme levels of masculine dimorphism combined with neotenous feminine dimorphism. While their natural lack of test prevents genitals and jaw developing for chad dimorphism or giving them a rugged androgenic look, this natural lack of test at the same time means no degenerate aromatization or estrogens to sensitize estrogen receptors.
Essentially despite their lack of test, a klinefelters male have extreme levels masculine dimorphism and athletic privilege because he doesn't have degenerate levels of aromatization. That's why they tend to have very long limbs and short torsos. Look at this example I used.
Despite the thin and fragile bones, he has high levels of athletic privilege. His longer limbs make him much faster and more explosive automatically a very good thing for sprinting. In combat sports combined with the extra speed explosiveness, long arms generate and store more power while giving a massive range advantage.