Even if Dallas defeats Philly the big test will be the niners. The reason they win is their QB never has to move from the initial set. Their strength lies in the 7 or 8 yard pass. Purdy rarely has to take a step in any direction once he retreats to his set up spot. Then most of his passes are in a space where the receiver goes. Most of the time the receiver goes 6 to 9 yards for a first down or within a couple of yards of a 1st down. That scheme is what they use and rarely does any defensive scheme put pressure on him. To beat the Niners you will have to make purdy move and throw on the run.