Earlier quoted context omitted.
You're being downvoted because you're being a racist buffoon. Yes, there is genetic variation across traits, this is a fact. That said, we are all heavily influenced by our environments and to discount this incredibly formative factor of all human life is ridiculous. Culture, poverty, exposure to crime, and endless cycle of poor parenting, whatever it may be - there are a million things that can and DO get in the way…
Case in point right here. Somehow there is this big conspiracy where certain groups of people, unanimously across the world, across all of human time, do worse than other groups of people. The whole world is in on it, and we must fix it!
Well, since I'm German, let's take the eurocentric approach. When we were walking around in furs scalping Romans, Africa was going pretty strong, wasn't it. China was going strong. The middle east was a major power. At that point, you could feasibly say that the Germanic savages were unanimously across the world, across all human time (eg. the last 200 years), doing worse than other groups of people. We just did kinda well, hit or miss, over the last 1000 years, which across the timescales humanity has been existing, isn't that much.
Other areas haven't been as lucky. Native Americans (last 200 years), Africa (last 300 years), China (last 200 years), the Ottoman empire (last 100 years), Russia (last 100 years) but hell, Austria isn't as hot as it was 100 years ago. But China is bouncing back, Africa is bouncing back, India is bouncing back.