This wasn't true for the hunter-gatherer era, as we can see with hunter-gatherer tribes both in the wild west and still alive. This is only really true during the agricultural era, and that wasn't because of superior genes or anything but it's about what a shit show that would have been for humanity at the beginning. Also, I forget the exact take down of this data but... The 80 20 rule is bull shit.

And finally, every dipshit who talks about the 80/20 rule and warlords owning women completely forgets that these warlords that owned women last about 5 years before being killed by men below them, as seen in Africa and the Middle East to this day. There is no world where you get to be king Conan with his harem, especially not in the violent world you wind up creating trying to have this.