> Czechia is richer per capita.

Are you sure about that? I'm Czech but have lived in Poland for 8 years and visit regularly. Poland used to be way poorer than Czechia, but these days it looks the other way around. I think the stats are either lagging behind or computed wrong. Note I regularly visit both the cities and the countryside in both Czechia and Poland.

Btw, the article has a "GDP per capita growth in post-communist countries" table, with Poland at the top and Czechia at the bottom.