Seriously doubt that Turner and Cottrell will be sticking just Cromartie on Moss one-on-one for even a small part of the game. Obviously, the problem with playing zone is that the talented players (and by this stage in the playoffs there's a huge influx of talented players) will easily beat them.
Perhaps Cromartie on Moss as a deterrent, but Cromartie gets beat short a lot and we may not have the luxury of sending another linebacker to cover short on that side of the field, what with the necessity of keeping up an agressive pass rush and being aware of all of Brady's other potential targets.
Cromartie has talent, for sure, and some of his feats this season have been mind-boggling, but match any DB to any WR and sooner or later one of them is going to make a mistake. Too many mistakes, and that's the ball game. So...Cromartie with an INT or Moss with a TD? I suppose we'll find out.