Some NBA stars had rings, some didn't whose better and whose not, what do you think?

I don't think it a criterion to judge a player by whether they have a ring or not,most of them are very excellent, due to some reason the didn't have the chance to win the champion ring, however ,it will never show that they are not great, Lebron James has the chance to win ring, it's the matter of the near future, so we just cheer for the greatness take no care of championship.