As he pointed out it's difficult to find objective data. But you can check:
* Human Development Index (http://en.wikipedia.org/wiki/List_of_countries_by_Human_Deve...): the USA is at position 13. It includes things like life expectancy and education.
* Satisfaction with Life index (http://en.wikipedia.org/wiki/Satisfaction_with_Life_Index):the USA is at position 23.
* World Health Organisation ranking of health care: (http://en.wikipedia.org/wiki/WHO%27s_ranking_of_health_care_...): the USA is at position 37
* Education index (http://en.wikipedia.org/wiki/Education_Index): the USA is at 19
* Income inequality (Gini coefficient): (http://en.wikipedia.org/wiki/Gini_coefficient) USA has a score of 47 (out of 100 for maximum inequality). EU has an average of 31
I am sure there's many other indices. And I am also sure that a lot of complains could be thrown on each of these. But I think overall they paint a pretty consistent picture of the USA.