Following what you wrote: A practical explanation of this is given in Denis Dutton’s article from 2007: http://www.denisdutton.com/baumeister.htm
What we forget is that men are not only disproportionately represented in the top 0.01% (or 1% or 5% or whatever window you wish to pick) — they are *similarly* disproportionately represented at the bottom. The article goes to some length to explain this.
Long story short: There’s an evolutionary advantage to it being so, and women being more moderate, because men tend to be the ones competing for reproductive advantage and how better to compete than to go to an extreme?
Some of this is cultural and can be changed. Some is biological. The interesting question is, how much of each? Remember we’re talking about averages here. This makes no predictions about individuals nor even distinct groupings, only the human population as a whole.