Ive always found that to be the case. Women's fights are either broken up or a guy takes over or it's just a minor sideshow for the "main event" the final duel between the hero and the villain.
I'll give you a classic example;
In Superman II, the PVC-clad bad bitch Ursa, played by Sarah Douglas loses her powers and do the movie makers use this opportunity for a proper catfight between two mortal human women??
No, of course they don't! Lois Lane gives her one punch when she's standing on the edge of an icy ledge in Superman's house, wearing high heels, and she falls to her death down a chasm!
Wasted opportunity if you ask me.
Put Douglas vs Kidder in a one on one catfight in a room (without a slippery ledge) and my money was on Douglas.