And as the major study on healthcare and insurance points out, not only are there negligible results but besides this, when it comes to the US, Obamacare has some really negative "unintended" consequences. You seem to think that having healthcare and insurance have a binary result - but even your own link shows it clearly doesn't. It's not only possible but quite probable that after Obamacare's implementation, the US would remain #7 by their standards.
There is nothing 'negligible' about a US patient having to pay around twice as much for a similar standard of healthcare as someone in another industrialized country. Clearly, even those who can afford health care in the US are being forced to overpay for it.
"On measures of efficiency, the U.S ranked last due to low marks when it comes to spending on administrative costs, use of information technology, re-hospitalization, and duplicative medical testing. Nineteen percent of U.S. adults with chronic conditions reported they visited an emergency department for a condition that could have been treated by a regular doctor, had one been available, more than three times the rate of patients in Germany or the Netherlands (6%)."