"Behind every succesful man there is a woman"
I think this is true to a large extent. Although women have the equipment and skills for child rearing, ever since neolithic times they've been goading men to go out and hunt the best meat. In nature the female will mate with the strongest and most succesful, so that all men do is geared up to getting the girl. WOmen are probably more ambitious too (cf Lady Macbeth, Eleanor of Aquitaine) and how many matriarchal societies are there? So yes men are trained (by their mothers) to be big and brave and not to cry, While girls are trained (albeit unconsciously) to be manipulative and with an eye to the long term