I agree with you. I grabbed a crude, available measure. But my argument stands by most ways of measuring (and the one I chose, while crude, doesn’t tell us nothing, despite what some of the commenters here suggest).

It's more difficult to find PPP data for cities than it is states, but here's the latter:

https://en.wikipedia.org/wiki/Comparison_between_U.S._states...

And for Belarus:

https://tradingeconomics.com/belarus/gdp-per-capita-ppp

You're right to notice that it's a better measure, but it still favors the spirit of my argument.