From the stats I’ve seen MT, straight theatre and film/TV all seem to have only ~30% female performers, and far fewer women in positions of power. Given that, I’d say that MT is no worse than other branches of theatre and that all areas of the entertainment business appear to lag most other US industries in employing women in the same numbers and at salaries that are comparable to mens’.
I’ve seen AEA report the numbers of men and women in the union (nearly equal IIRC), yet I have never seen them compare the number of actual weeks worked or $ earned by gender. I think those numbers would be very interesting, so if anyone has access to them please share!