IQ is overrated compared to wisdom, (which is not predicative by genetics), and any level of IQ can have a high wisdom or be a damn fool.
Furthermore, low IQ averages in a community subset is typically indicative of too much inbreeding. The fact that sickle cell anemia is still so prevalent among some American black sub communities shows that cousins and second cousins are mingling too much on their own of their own free will. Sickle cell trait is common among your distant relatives in Ghana but they never get the anemia because they don’t inbreed at all. Some of it was initially forced on your ancestors by slavers who realized the stronger the trait the quicker the recovery from malaria (and therefore more productive a worker), but why does it persist anywhere since emancipation?
You have a high IQ in part because you are almost certainly not so inbred compared to those who are. Likely in part because you have some European ancestors, and not necessarily from grape. During the transition period between white indentured servants and permanent African slaves, many white and black plantation workers became close and had children consensually together.
Other situations during slavery, kids would fall in love IN SPITE of the institution, like the tragic background the “Candyman” ghost had, (although they would not always be killed for it).
Regardless, it is not as simple as either genuine white or black racists want it to be. Your craving for simplicity is born of dialectical bullshit.
Why is Hegel the only major white European philosopher you take seriously without question?
I, for one, curse the day he was born. He and his student Marx are Antichrist figures.