> If you isolate this group and compare them globally, it spells out why for decades so many white collar workers wanted to be in the US rather than Europe or the East.

Given it sounds like you've already done this, care to share the results you got? When I meet peers from the US, it still seems like things are more rough there, regardless of class, compared to in other countries, but this is of course based on my personal experience, would love to see concrete data about it.