It tells us that their healthcare costs are higher, not better. Your link says Americans have a lower than average life expectancy and that, that metric is a good indication of healthcare quality.
Despite (or because of this) 28 million Americans have no access to any healthcare be-it public or private and that 1 in 4 have delayed or don't seek care when they need it because they can't afford it.
Anyway this is so far OT now and I feel I've clarified the point I was making as did your link.