There are always exceptions
At my age (me and dirt showed up at about the same time) most of my female passengers not only have kids, they have grand kids - consequently, I tend to be careful. Hey, who wants to be known as the guy who clocked granny. Funny thing is, most of the ladies want to go fast - at least, in a straight line. In my experience, woman don't tend to like Gs and leaning over, so I don't.
Far as skills go: spacally, they are at a disadvatage - but that is more than made up for by lack of ego and a willingness to listen. Besides, they have better reflexes than men, and they tend not to lie (at least, about their riding abilities) as much as men.