Outcomes for wealthy and well insured Americans are superior to those in Canada. There is no question that American medical research and infrastructure is vastly superior to what we have in Canada. The issue in the USA is that such expertise and infrastructure is not available to a large percentage of their population. Even among many of those Americans that are insured, they get 'basic' coverage, not the 'premium' levels of healthcare available to wealthy Americans.

The averaging of outcomes for key metrics such as life expectancy, infant mortality, etc. reflects a large population of uninsured and under-insured Americans relative to a more broadly based coverage in Canada.

That being said, both US and Canadian healthcare systems suck big time when compared to most European countries and others like Japan, Australia and New Zealand.