One reason why the U.S. is volatile, influential, dynamic, and by far the most culturally influential society in the world are the number and variety of its legal immigrants. No one wants to move to Russia. Switzerland does not want any new immigrants. France and Germany don’t quite know what to do with those already residing in their countries. China and Japan could never consider an African, Swedish, or Mexican immigrant fully Chinese or Japanese. The Arab World would not let in Jews and in many places is driving out Christians. Building a large new Church anywhere in the Islamic world is for all practical purposes now impossible.
In short, people vote with their feet, and by huge margins prefer the greater freedom, economic opportunity, and security of the U.S., not to mention its meritocracy that assesses talent far less than elsewhere on class, racial, tribal, or religious criteria. Because the U.S., also unlike other countries, strangely does not value that much education, capital, or skills in assessing potential immigrants (family ties and the fact of reaching U.S. soil being the more influential criteria), and because it hosts somewhere between 11 and 20 million illegal immigrants, it naturally has ongoing challenges to provide near instant parity to millions who arrive here poor, uneducated, and without money.
To suggest that we are at fault because our healthcare or primary education system is somehow not up to Danish or Icelandic standard is laughable, when 13% of the present population is foreign born — and probably far more had we accurate numbers of illegal aliens currently residing in the American southwest. The source of immigration makes assimilation also more difficult. Switzerland became culturally and psychologically incapable of accepting more immigrants, despite the fact that they are largely from elsewhere in Europe. In contrast, most of the current immigrants to the U.S. arrive from an impoverished Mexico and Latin America, not Canada, and thus come with far greater disparities than other North American citizens.
Assessments can be rigged anyway that one wishes — if the point is to advance preconceived and ideological aims. The relative price of food, fuel, and cars, or the number of air conditioners per capita, or the global rankings of universities, or comparative population growth, or the rate of and age at marriage, the ability to defend one’s nation without alliances and outside subsidies, or religious observance, or rubrics about assimilation, integration, and intermarriage of newcomers could all be massaged to make Europe look quite pathological in terms of aristocratic bias, class impediments, ossified attitudes from defense to entrepreneurship, atheism, and the loss of freedom resulting from massive regulations and high taxes.
In short, if you want to prove that the U.S. is not number one, you can — usually to reflect the particular agenda you wish to advance.