I pulled some city-level numbers and it seems like at least in some areas, European SWE are missing out compared to coastal US ones:

London 2018: 0.7 https://www.ons.gov.uk/economy/nationalaccounts/uksectoracco...

SF 2012: 0.523 https://www.sfgate.com/bayarea/article/Income-inequality-on-... (probably this has gone up!)

Paris 2015: ~0.492 https://www.institutmontaigne.org/en/blog/data-inequalities-... (they just say "similar to brazil", which is 0.492

Its unfortunately harder to find a bunch of city-level data, I wasn't able to find any German cities on quick googling, so I'm definitely fulfilling stereotypes of "Americans who think of Europe as just a couple famous cities", but those capture at least a couple of major population centers that aren't so appealing if you're a dev compared to the US hotspots: they're still unequal, but suddenly you're not nearly as high on the totem pole.