Seeems like
https://www.sportbible.com/news/mma-take-a-bow-a-female-fighter-beat-up-troll-who-said-most-men-would-beat-most-women-20191029needs to be posted. Just some 41 year old woman beating up a dude.
Obviously we aren't talking about a no holds brawl so you always run into the question of what would happen in the real world. It isn't like Rousey has trained for that case either. There is some subset of guys where the shear physicality might make a difference but a lot of those submission holds and joint attacks are working no matter how big you are if you don't have a clue on how to defend yourself. Look at the shitty punching technique of some proathletes when they go at it on the court in anger.
The whole things is pretty stupid. Fights are no different than any other sport. I can't outsprint the worlds fastest woman, beat the best woman's BB player, and so on. Why the heck would I think I would have a chance against a world class fighter?