I considered placing her on the list, but the problem is that her abilites are also physical in nature. In other words, Batman could hit her across the back of the head with a baseball bat and all it would do is muss her hair (and piss her off). So while she may not have used her strength and superior speed to fight him, he couldn't hurt her and thus, he couln't knock her out.
Now, white-jumpsuit Diana... that's a whole diferent kettle of fish.