Saying something ridiculously sexist like "There wouldn't be wars if society was run by women" or any other similar forms such as "the future is female" is just as braindead stupid as someone saying:
"Racism would disappear if X was run by Y people"
True, but women make up the majority of the population in the US, and so in an equal society we'd expect them to make up a very slight majority of fortune 500 CEOs, congressional representatives, supreme court justices and presidents. Whether or not you think that'd make a real difference in the world doesn't change that it's a perfectly legitimate goal and I don't think it's one that's particularly sexist.
If you were to argue that you should have more women in those roles to make up for the historical injustice... that becomes a bit less clear as it would create a situation where present day men are disenfranchised to make up for the mistakes of our forefathers.