USA is just that much friendlier to immigration. Rich countries like Switzerland and Norway should offer much better social program and have equal average wealth level, but people struggle to get in. In other words even if American want to move in they cannot. Immigration pattern is subject to many strong factors besides wealth level and political preference.This conversation seems to have drifted into a wide array of points but the main ones which seems to be uncontested is that US incomes are higher than those in Europe, have grown faster over the last 2 decades and most measures of consumption indicate US households consume more.
A final thing: if European households were better off than American households, why are there more Europeans immigrating to the United States than Americans immigrating to Europe? The revealed preference suggests US households are better off