“This is if you accept a biological difference between these respective races. It is something I do not accept.”
You don’t have to accept for it to be true.
On average: Asians score 5 deviation points higher than Europeans on IQ tests. Europeans score 5 deviation points higher than Africans on IQ tests. You don’t have to believe it for the scores to be accurate.
Ashkenazi Jews and all Finns of whatever ethnic origin (there are several there) score higher than the Chinese, and the Chinese who live in cities and have access to education score higher than everybody else.