Well, the US is richer (PPP adjusted) than nearly every single one one of those countries (the sole exceptions being Norway and a couple of city states). In the one case where I've seen good data (US vs Sweden), the disparity gets even bigger if you compare Swedes to Swedish Americans.
http://super-economy.blogspot.com/2010/03/super-economy-in-o...
So maybe the US is doing something right after all.