And, if I remember correctly the extreme right of the bellcurve is much more heavily populated by men. Of course the extreme left is too, but I'm not sure that negates my point.
Very few women, per population representation, are flocking to engineering schools. I think you can be of average intelligence and do really well in law school, memory is key there, but engineering requires higher brain function, IMO.
There are relatively few female architects as well, with no female architect coming even close to Wright's status or others of his caliber. Maybe that will happen in time, but I don't see it ever becoming a situation of glut.
Women excel in other areas such as 'instinct', but I don't think they are as smart as men. And when women are young, they are prone to not even use what they have. Hence the old expression, 'you could talk that girl out of her virginity twice with the same line.'
I think you have something about the extremes of the bell curve, but lawyers and docs don't inhabit the extremes mostly. They tend to be in the 120 to 135 IQ range - smart, but usually just short or quite short of the near genius category.
I don't think it's as much that, as it is that it's much harder to mess around with test scores in engineering. An essay can have major failures in logical reasoning and even elementary spelling and grammar, and be marked "brilliant" if it was written by the "right" person, but marking an incorrect mathematical result as "correct" proclaims the professor doing the marking as an idiot.
An equation is either right or wrong. A software application either works or not. A bridge either stands or falls. That makes engineering a difficult target for affirmative action