I don't think anyone is the "Greatest ever" because even the most so-called "saintly" of people, such as Gandhi or MLK, did possess some serious flaws that would make some people, once they actually found such stuff out, get turned off by them. These so-called "pure" people are not that at all, though I will admit some of them did do fairly decent things through their actions. But, I think people should be cautious when putting someone up on a pedestal, because chances are they are not as good or perfect as people make them out to be.