Not sure if you checked the link, Wikipedia has both Mean equivalised and Median equivalised charts.

Americans rank #1 on both mean and median. So the point about the super rich distorting the mean is irrelevant.

> But somehow it is just easier to live as a poorish person in many European countries.

Perception and narratives are not reality. In fact, typically in economic matters it takes almost a decade for the public narrative to shift to match the reality of the numbers. Even if reality is right there in the data.

This is why bubbles usually go on for much longer than the "smart" people think they will. Look at any of Fama-French research; momentum is the strongest inefficiency in virtually all markets.