I don't see Iran on that list. Seems like mainly developed countries. Also, the US has a large amount of geographic cost-of-living disparity, and I am having trouble identifying whether these numbers are controlled for that.
Fact is, United States is pretty shit when it comes to income inequality.
I’m not automatically worse off because someone else is better off. That’s fallacious nonsense (the zero-sum fallacy). And it definitely does not meaningfully translate across countries, if what you’re interested in is human welfare.
[0] https://www.hoover.org/research/income-inequality-isnt-probl...