I'm sorry Kasz, but you are just plain wrong.
Take a look at healthcare funding again, and you'll see Iceland paying $2,600 per capita compared to the United States $4,600 per capita.
http://www.nationmaster.com/graph/hea_hea_car_fun_tot_per_cap-care-funding-total-per-capita
Using your logic, we could say that since Iceland has a population of 300,000, which is 100 times less than American population, that if Iceland had Americas population they would be paying $260,000 per capita in healthcare. This logic is laughably wrong.
In reality, wether you choose to accept reality or not, population does not have an effect on measures of GDP, healthcare spending, and a plethora of other factors that you consider to be 'uncomparable.' Look at the link I posted above, and it should become obvious that population size has no correlation with healthcare costs.
