Therefore, in a just world, we'd see an exact 50/50 ratio of men and women in every possible occupation, because there are no differences between men and women, therefore the only possible explanation for non-parity anywhere is because some kind of "systemic" factor is unfairly preventing one of the sexes from achieving the career results that they obviously want.
And if men and women don't want the same things on average, then that itself is a symptom of some kind of systemic problem. Because biology plays no role in human psychology; we're the only species in the animal kingdom to come into this world with no pre-programming and absolutely everything that we do is the result of cultural conditioning. So men and women could be exactly the same if only more parents would let their sons play with Barbie and their daughters play with GI Joe.