While I agree with your latter point - it seems everything has to be put into historical context within minutes, turning commentary into hyperbole contests - I can still find absolutely no evidence for your first claim. Rodgers has performed at a higher level than all three of them, behind the worst OL by a huge margin and the least help from a rushing attack. He even has a SB, so you can't discredit him there.
What the other three have on him is tenure, and nothing more. Other than, again, the whispers that he can be an arrogant d-bag.