From what I can tell, americans seems to be pretty poorly compensated, looking how top 10% or top 20% is not very interesting, I've seen software developers in USA that are homeless, talked to people who work way more than me while sounding significantly poorer than me even if on paper they may earn a lot more, which mean you can't look at just wages and draw conclusions, things like the difference in college cost, rent or difference in infrastructure can make a massive difference and seems to make USA significantly poorer than it is on paper compared to other countries, especially if you look how average people live, not surprising USA is significantly behind in stuff like life expectency compared to the top performers.
It is not like top 10% is doing poorly in other countries either, like my grandparents on my mother sides own two houses, one in Sweden and one in Spain which they spend a lot of time in, my father and his familiy own a house on an island and things like that and overall it seems people no matter their wealth have worse life expectency in USA than in many other countries, not just the poor live shorter but from what I understand the rich also have worse life expectency than the rich in some other countries.