You would have to read this article to understand that ranking systems. They tell how they set it up and how they grade it. For instance, on ranking is based on what they think is fair. lol. I'm not sure who gets to decide. Also, we ranked #1 in two of their categories. You have to understand quite a bit about the WHO to understand these rankings. Also, keep in mind that the WHO wants nationalized health care. They have more power and influence with National health care countries.
WHO’s assessment system was based on five indicators: overall level of population health; health inequalities (or disparities) within the population; overall level of health system responsiveness (a combination of patient satisfaction and how well the system acts); distribution of responsiveness within the population (how well people of varying economic status find that they are served by the health system); and the distribution of the health system’s financial burden within the population (who pays the costs).