> standards of living
As measured by ... purchasing power.
Let's take a look, Safety Index - US 50.8, Belgium 50.6. Health care index - Belgium 75.9, US 67.8, Pollution Index - US 36.7, Belgium 49.2, Climate index - Belgium 86, US 78.5.
As it stands US standard of living is better really only in "you can buy a larger house" (shocking, giving the relative size), and "it'll be slightly cheaper".
Not by any other metric.