My immediate thought when I saw this a few days ago was "sampling bias" -- not that the author had a biased sample of professional women, but rather that professional women are a biased sample of women. Given the social environment -- pushing both females and males away from what they might have preferred as a life trajectory -- I think it's very likely that the average professional woman is significantly more aggres…
Social factors like the assumption that women who consistently outrank their peers are 'significantly more aggressive'? I'm sure you mean well but your post here seems like a classic example of circular reasoning. You assume that because the total population of women entering such programs is not any smarter on average, those who consistently perform well rather than quitting must therefore be of only average intelligence, and are making up for it by being more aggressive and competitive (than, I assume, the average man). It's equally possible that women of average or median intelligence deicde they're unlikely to succeed in that field and drop out, leaving only the best female students.
My wife is an EE and there were only 2 women in her graduating class out of a total of 30 or 35. She's had to put up her share of colleagues complaining about her being 'abrasive' and so on. It seems to me that this only exists relative to the complainant's prior expectations of women, eg her emails tend to be short and to the point rather than chatty or friendly. The horror.