Point is that a male nurse of equivalent education and experience is still paid similarly.

Aggressive jobs that involve competitive industries and high stress like wallstreet which demand a very shit work life balance are not favored by a lot of women I believe. Work/Life balance is something a lot of women have pressure to maintain over men. Like I said though men have more pressure to earn a higher wage. Testosterone is something that just makes men want to compete including earning a higher wage.