Power: for a man, it's physical strength. For a woman, it's beauty, or rather femininity itself.
Thinking about how a woman's power is sly and naughty, while a man's is almost an entitlement, deserved. A man exercising his power is blunt and obvious, as are his objectives; a woman exercising her power is perhaps obvious, but certain subtle, and her objectives are inscrutable.
The crux of it is that a man's power over a woman depends on her power over him: he would not even think to subdue her if not for the fact that she has already seduced him.
This strikes me as incredibly important.