When I took a test on a driving course (closed course, it involved drinking) the very best driver, sober, was a guy, and he was the second-best when drunk. I was the second best, sober, and the best, drunk. Behind us were two women and two men and I believe the women did better than the men when they were all sober and the men did better when they were all drunk, but the first guy and I did better than all of them even when they were sober and we were drunk. (We were not all that drunk. My drunk score suffered because I slowed down a bit. I still didn’t hit anything. Same for the top guy, I think. Other people hit stuff left and right.)
My experience is that men are nervier and in general exhibit more mastery of their vehicles, but because they are taking more chance (and probably driving more miles), they lose out. Also it seems to me that men are more likely to be stupid and macho about knowing when they should or should not get behind the wheel. (“I can drive through that snowstorm, no problem.” “I can four-wheel up this vertical muddy mountain, no problem.” “I only had six beers, no problem.”)
Also I resent this bit about women “tending” to sit lower in the seat because you’re shorter. You don’t exactly have a choice in this, you know. If you’re shorter, you are going to sit lower in the seat.