Archie Manning was a great QB stuck on a horrible team. I'll tell you right now it wasn't his fault they were so bad. The Saints for years ignored getting football minded people in place to fix things and Archie paid for it. Look at the difference in the Saints before Jim Finks and after his arrival. Sometimes there simply isn't anything the player can do to alter that atmosphere of losing.
Anyone who thinks Archie Manning was horrible needs to listen to the players of that era.
Every year QBs go high in the Drafts. Why? Real simple, teams realize that rolling the dice on them is about the long term payoff. Until that changes, until the NFL ignores QBs in Free Agency and the Draft, there's no basis to the argument that a Franchise caliber QB is a luxury not a necessity. If there were even a scrap of evidence to support the thinking I'd be impressed.
Jon Kitna was a decent QB. Yet the Bengals drafted Carson Palmer. The Colts, Patriots, Eagles, Vikings, et al, in recent years gave huge contracts to keep their Franchise QBs in town. There's a very simple reason that gets ignored on message boards far too often.
Franchise QB in place for long term = better chance at consistent runs if the Front Office does its job well.