IMO the most successful prehistoric enclaves were those manned by protective nurturing males. Their offspring were much more likely to survive. The big error I see made in these genetic discussions is thinking the male who reproduces the most is the winner. No its the male whose offspring survived who was the winner.

And after 250000 years it hasn't frickin changed. The most nurturing, family protective and providing male still has the most successful offspring. Thats why women want the whole package even today. Penis size could likely be the least accurate measure of having successful offspring. Women are way more drawn to powerful men than well endowed men, whether it be on the savanna or the boardroom.