I would say Kubrick and Hitchcock are the two most overrated:

And I say that Kubrick and Hitchcock are two of the greatest - and, NO, I have NOT "overrated" them. That is how I have exactly rated them. It is more than a little arrogant of you to say that people who hold K and H in high regard are wrong or don't know how to rate directors, as if only your opinion, in a field of discussion which is ONLY opinion, is valid.