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.
My impression has been that wealth inequality in many places in Europe is much higher than income inequality, as a factor of it being an older society.
The places in Europe I'd want to move to are really no cheaper to buy a house than the places I'd want to live in the US.