This seems oversimplified to me. I think it's fairer to say the graph of quality of life vs. income in Europe has a lower slope than America. Meaning, quality o

This seems oversimplified to me. I think it's fairer to say the graph of quality of life vs. income in Europe has a lower slope than America. Meaning, quality of life in America can be much higher for the wealthy, somewhat higher for upper middle income, lower for middle income, and much worse for low income.