Men do not have the opportunity to give birth, so they can weigh in more heavily on self-sacrifice without the contingency that their body could be used as a medium for life-production.
Basically, men are more like prototypal inheritance whereas women are more like classical inheritance, or at least we like to think that men are more "existential" while women are conservative in their "recreate the self".
Most men advance in careers that are inherently lethal; so naturally women are going to be less driven to advance themselves in careers that compromise their total contract not only as financial agents but as well as genetic agents.
In addition, there's nothing stopping a successful female from having a child and handing it over to a team of nannies immediately upon birth like successful men do.
Men, specially young men, are genetically programmed to not think about that. A typical 18 year old that goes to war does not think he's going to die. He thinks he's going to come back as a war hero and enjoy the... shall we say "admiration" of all his dead comrades' girlfriends.
> In addition, there's nothing stopping a successful female from having a child and handing it over to a team of nannies immediately upon birth like successful men do.
Successful men can sire offspring in 15 minutes (or less, but there's already a pill for that) and delegate. Successful women have to fight their body for at least six months in order to hold on to their position during pregnancy. Then comes the postpartum depression and a whole other array of nasties.
So, not the same thing.