First-- I wish I had a dollar for every message board post by the other team along the lines of: "you stop those WRs by putting Warner on his back". Every week its the same.
That being said -- the consistent theme this year is that teams are playing a ton of "drop 7, rush 4, keep everything in front of you" defense against the Cards.
When Kurt is on -- the Cards do a lot of sub-15 yard passes and have a very efficient ball control offense. When Kurt is off -- you get the Carolina game.
That defense also really works when a defense feels confident that its front 7 can limit the run. This team really needs more Beanie over the second half of the season.