There are some women on the far right of the bell curve. My guess is she doesn't look like the woman in the picture winning the arm wrestling contest.
I went to church with this pretty young woman. I had no idea at first that she was some kind of weight lifting champion until someone said it. She didn't have really big arms. So looks can be deceptive. After someone mentioned it, I thought, well yeah, she does look fit. But she didn't look like a body builder, just normal fit.
In the movies, though, it's kind of ridiculous sometimes. The female hero or villain knocks out the big strong men many times her size. Men do that, too, and it's ridiculous, but even more so with women characters because the contrast is greater. I wonder if it gives girls a false sense of security to go out and fight bad guys and end up dead. If nothing else, having people of different genders hit each other on the screen is bad for good social etiquette.