Well what he's saying is that men are more skilled drivers in a competitive / racing sense. Which is true. While a lot of 18 year olds crash from driving stupidly fast, the vast majority of them never do. I think the ratio would be much worse if teenage girls started attempting the same stupid crap their male counterparts do on a regular basis.
If all of these hotrodding young men stopped taking stupid risks, and drove responsibly all of the time, they would have many fewer accidents than women. But unfortunately this will never happen, so in the statistical battle with the general incompetence of female drivers, the absurd risk taking of the male will continue to outweigh their greater average skill and make them in the end worse drivers than women.