I don't like saying, "the best ever"........Rodgers may not have had the ability to withstand the punishment that Elway, Marino, Staughback or Tarkenton had to endure. Today's QB's are treated like china dolls compared to the QB's back in those days where they were pummeled like tackling dummies.
Go back on youtube and watch the QB's in the 70's and 80's........Those guys got clobbered by blind side hits and drilled with DT's facemasks in their backs, helmet to helmet hits..........It's a wonder how some of those guys got up after that.