This all makes perfect sense if you actually think about it. Women and men are different obviously, different interests, different personality traits on average. Of course there are going to be differences in the brain. But if you look at the brain as a whole there will actually be a huge amount of overlap and little difference as well, we are the same species afterall. If you try to say there is no difference between man's brain or a woman's you are like half a step from saying there is no such thing as a woman or a man.