If TV ratings determine how good a sport is then yes, basketball is pretty low on the totum, behind AFL , Rugby whatever, horse racing (in november at least, V8 supercars and probably WWE. But if you are judging a sport by participation surely basketball is right up there in global terms. Yep we want the NBL to be a success and to have all the hype of the heavily marketed comps, but do not lose sight of the fact that at almost every other level basketball is one of the 'biggest' sports on the planet. It is the media that want you to think that if you are not on the front page (or back page) you do not exist.
Compare the number of people who PLAY Rugby 7s v the number of people who PLAY basketball.