Hmmmm, I think I have that “hierarchical, points-based, advantage-seeking” guess about men more than about women - but this may be my experience in computer-techie-land talking. I think high tech has more than its share of that set of traits, and the vast majority of my coworkers throughout my career have been men. (Also, in much of US culture it is seen as important for men to be “above” women, and I look female.)