I'm pointing to Steph Curry because his best skills are NOT dependent on size or strength. People would say the same thing you're saying about females, but against white guys in the 80's. It's exactly what people like Isaiah Thomas would say when defending his comments about Larry Bird.

"Oh he's good for a white guy but white guys are genetically and physically inferior to black people. If he were black he'd be just another brother."

I'm not comparing Larry Bird or Steph Curry to females. I'm saying their skills neutralized stronger, bigger people even though Bird and Curry weren't bigger or stronger. Your entire argument rests on the well-established fact that men are bigger and stronger than women. But that doesn't mean a woman could never ever beat a man at anything physical ever. That's ridiculous.

There was a video on reddit a while back where a chess Grandmaster got beat by some noob who had a tricky set of moves the GM had never seen before. It's not like the noob was a better chess player than the GM. It's just he caught the right GM at the right time with the right set of skills.

Every athlete/competitor will tell you that anyone can get beat any day. And it's true. It just takes an off day for the professional, and the right set of circumstances for someone with a physical/mental/experiential disadvantage. THAT'S what it would take for LeBron to lose a 1v1 match against a streetballer. THAT'S what it would take for Rousey to beat Floyd. A fluke. It would take a total and complete fluke to happen. But it's not impossible by any stretch of the imagination...well apparently except your clearly limited intellectual potential.