An axiom of every discussion you'll ever have is that all populations have exactly the same mean and standard deviation for every single measurable psychological trait that you can think of.
I suspect the person you replied to was being highly sarcastic in their reply. It's a highly charged area due to the history of race relations in the US.
Mutations accumulate at a slow enough rate so that we know that they are very, very similar to modern humans as 24000 years is a very short time for that; and the reasonable proxies for intelligence that can be measured archeologically i.e. brain volume are the same or even in their favor.
I find how misleading these illustrations are, hilarious. The average European looked subsaharan African (chedderman) 9-10k years ago, but 24k years ago, I'm supposed to believe light skinned Asians with thin straight hair existed.
This is absolutey wrong and is history denial. Black people were in the Americas long before the Olmecs in central America (another ancient African civilization).
All these "Asian" people were highly melanated black people, (Asian historians understand this fact) and they are descendants of mostly fishermen related to Khoikhoi and modern day Xhosa people of south Africa.