Lots of interesting observations on Gender.
The mistake in that way of thinking is to look only at the top. If one were to look downward to the bottom of society instead, one finds mostly men there too. Who's in prison, all over the world, as criminals or political prisoners? The population on Death Row has never approached 51% female. Who's homeless? Again, mostly men. Whom does society use for bad or dangerous jobs? US Department of Labor statistics report that 93% of the people killed on the job are men. Likewise, who gets killed in battle? Even in today's American army, which has made much of integrating the sexes and putting women into combat, the risks aren't equal. This year we passed the milestone of 3,000 deaths in Iraq, and of those, 2,938 were men, 62 were women.
The conclusion is that men and women are both social but in different ways. Women specialize in the narrow sphere of intimate relationships. Men specialize in the larger group. If you make a list of activities that are done in large groups, you are likely to have a list of things that men do and enjoy more than women: team sports, politics, large corporations, economic networks, and so forth.
Women would divide the money equally, with an equal share for everybody. Men, in contrast, would divide it unequally, giving the biggest share of reward to whoever had done the most work.