Flip the order of the rankings, and you'll have a more accurate picture of how the system works in Auburn.
Also, check out the discussion tab for more truthful descriptions of greek life.
Sororities and fraterities rank themselves all 5 stars so that they can attempt to appear to be the best. Therefore, this ranking system is an unreliable resource to judge their rank.
Honestly, if you're rushing, you're better of not worrying about rankings, because you will end up where you belong.