Life expectancy is not a useful health care system comparison because the primary factors that cause divergences between developed countries aren't based in the health system --- they're things like traffic accidents, homicides, drug overdoses, and suicide. Yes, CVD will appear in that list of factors, but it's noisy; despite having structurally the same health care system, states in New England will have Scandinavian CVD outcomes while southern states (some of whom actually do a better job than New England at making care available) have developing-nation CVD outcomes.