Until he carries teams to 5 AFC Championship and 2 Super Bowl titles, breaking antiquated regular season records will mean nothing in comparing to the greatness that is John Elway. Manning has a long way to go...he is a great regular season QB but several of his contemporaries (including his brother) have outdone him in the playoffs and championship categories.
As far as championships are concerned, Elway's only real peer was Joe Montana, and Joe's team was loaded with all-time type players. In the AFC, Elway was up against the likes of Dan Marino, Warren Moon, Jim Kelly, etc. and still outdid all of them in the Championships department during his career.
I love me some Manning though...and I've got a special feeling that this team is going to win a couple of trophies before he hangs em up.