[awl130]

singapore is a city disguising itself as a country. there's your answer. for comparison, compare singapore to the richest urban areas of its peers and you will see that advantage go away most likely

[graeme]

People always forget this. It applies to per capita incomes too.

[trextrex]

Similarly the population of many of the Nordic countries is comparable to mid to large cities in US/Asia.

[scirocco]

Still not fair just to look at the population. Sweden is twice the size of UK