To further destroy the point of removing Warner and assuming that the running game would remain the same.
Sando is probably the most repected Cardinals NATIONAL observer but I am sure you will take a blindseye to this as well....
http://myespn.go.com/blogs/nfcwest/0-6-118/If-the-Cardinals-had-Adrian-Peterson.html
The more interesting issue to me is how different the Cardinals might look with Peterson as a centerpiece of their offense. Drafting Peterson might have affected the Cardinals' thinking at quarterback.
Kurt Warner is at his best spreading the field and throwing from the shotgun. He isn't comfortable running a traditional offense. The Cardinals would have an entirely different feel if they felt compelled to give their first-round running back 20 or 25 carries a game.
Would you rather have
Matt Leinart handing off to Peterson, with fewer passes to the receivers? Or would you rather have Warner spreading the field and firing
So yeah the offense would be entirely different. I don't think Peterson would be Peterson if he was trying to run with Warner back there in the shotgun 82% of the time. He would be good but he sure as hell wouldn't be leading the league in rushing.