[rhaway84773]

Other societies are also societies of disparate cultures.

Most other societies also don’t tend to have every group at average, but some groups above average and others lower.

If you break other societies with higher average scores down by groups along fault lines in those societies, the top groups in those societies will also be doing much better than the bottom groups, and considering they have higher average scores, the top groups will likely be doing better than the top groups in the US.