US upper class in a wealthy area is very different from US lower middle class in another. And the same goes for Europe.
I'd list them now, but that would just invite the European Defense Squad to come out and tell me how all those problems are specific to Munich/Bavaria/Germany, ignoring how the original comment I was responding to was generalizing the same way.
The truth is that there are some things you can generalize okay on (e.g. healthcare being cheaper in Europe than the US, or the US having poor public transit), but many things really are specific to the particular European country at least. Biking, for example, might be amazing or completely terrible depending on the part of Europe.
There are upsides to the US, but when I realised that I could never see myself retiring there I realised it made no sense to spend my working life there, even if the salary would be higher.