The only one "prejudiced" here is you, Slin. Basketball IQ is basketball IQ and it knows no nationality, race, or anything like that. If it did, and we were prejudiced, we wouldn't be talking about how high of a basketball IQ guys like Booker and Bridges had.
In general, I suspect that the more athletic someone is, the lower their basketball IQ is because they've been able to coast based on their athleticism. Less athletic players HAD to learn the fundamentals to be able to compete. Note, I said "in general"- there are obvious exceptions. The biggest exception would be the elite players (LeBrons, KDs, Hakeems, etc of the world, who obviously have both), but I think the further down you go in the level of players, the more this is true.
I know you hate Bender, and that's fine, but that's irrelevant to the fact that Chriss has the lowest basketball IQ ever seen in the NBA. He has no understanding of rotations, switching, or anything else. On top of that, he has one of the worst attitudes I have ever seen.