To your first point, Lamar has absolutely sucked in the playoffs. When they face a good defense, he is pedestrian at best. If he could play the cowboys each week, I'd be scared
Second, making Nate Peterman look bad is not an accomplishment. Its pretty much considered bullying at this point. Also, this offense is very different than the one they faced last year. I'm confident Josh is much more ready to beat them this year, than he was last year. (Which by they way, the lost on a 4th down pass that Josh put in the exact right spot)