I see where you're going with that Gonz, but you're talking untrained individuals too. When you live through basic with the women, and see that they can do and do all the same physical activities you do, then you are more likely to see those women as fellow soliders, not women. I think that's an important part of the equal requirements. If a man knows that the women didn't have to do as many situps, pullups or whatever, then that is just going to make them believe more that they are superior to them.
As far as instict, yes, males are more instictively hunters, but you can't tell me that women aren't protective. You get the right mindset going in a woman, she could take out a few hundred enemies easily.