Just giving an example since every area has its specificities...
An American citizen, salaried, would earn a net before taxes of about 50-75% more than its French counterpart, working in a similar sized city.
Now, the French dont have to prepare his retirement himself, since the dues are already paid when the salary is received.
Same thing for education, which is high level and free.
The health system is also #1 worldwide and mostly free (ie : free for anything serious, whatever the amount).
So, it is difficult to compare...
It is better to be in the US for young people without a family and earning more than average, and for working people with a small family earning a lot more than average.
For the others, I think France would yield more wealth overall.
It is mostly a matter of choices... depending on risk adversity...
I would be pissed off to have a sizable portion of my net worth taken away for accidental medical bills, for example.
OHLC