You miss the point. Spending more for more medical care (like more tests, or MRIs, etc) isn't the same thing as spending more for the same medical care.
See the difference?
I have just returned from visiting a friend in Costa Rica. While I was there we stopped by a local pharmacy, he walk in, picked up his monthly supply of blood pressure meds, paid around $5 and walked out. No perscription, no insurance, no hassle. How do you know that's the right stuff I asked; he told me his doctor has prescribed it and told him that as long as he felt fine to just come in for his semi-annual physical.
That is how real world medicine works. Alot of what we have in the states are simply unnecessary medical testing performed to provide legal paper trail in the event of a lawsuit. It is also true that when you do surgery here you may have to pay tens of thousands of dollars just for the insurance bond for your specific surgery on that day. Fear and risk avoidance is the major driver of cost in the US; and it will remain that way until we deal with tort reform.