re: Is Archie Manning the most overrated SEC player all time.

No. He and Glen Cannon carried those Ole Miss teams. Though he was on a rival team, he was one of my boyhood idols of that era, along with Pistol Pete, Tommy Casanova, Andy Hamilton, Mike Anderson, Bert Jones and Mike Miley.
I cried like a baby when he beat us in 1968 and 1969, but I still loved watching him play and was happy when the Saints drafted him.