How a passing threat helps AP

In the previous post, I suggested Brett Favre would open things up for Adrian Peterson to have a career year, and Jason wondered how much more we can really expect from AP. I can certainly be more specific: I believe a passing threat would help Peterson to be a more consistent runner.Adrian Peterson averaged 4.8 yards per rush in 2008, and this hefty average was buoyed by a lot of long runs. Peterson led the league with 20 runs of 20+ yards. But according to Football Outsiders, Peterson had a success rate of 46%, which ranked 23rd in the league. Peterson had a lot of dazzling runs, but he also got stuffed at the line of scrimmage a lot. This was most evident in the final two games; here are the yards Peterson gained on each of his carries.versus Giants: 1, -4, 1, 4, 3, 0, 3, 3, 67, -1, -1, 3, 7, 2, 6, 5, -2, 0, 7, 1, -2versus Eagles: -1, -1, 2, 2, 6, 2, 40, 6, 0, 6, 1, 3, 0, 2, 0, 3, 0, 5, 5, 2Perhaps the immensely talented Peterson tries to break too many runs to the outside a...