I only saw the highlights in the gym this morning, but it looks like that was a heartbreaker for Arizona. They could go up or down from this point on. They might realize that they are better than everyone's been saying they are, or they just might throw in the towel and quit. Based on Dennis Green's reaction in the post-game press conference, I'd say we haven't seen the last of Arizona. Leinhart is only going to get better.
As for the Bears, the performance of their defense in the final half is the stuff that championship teams are made of. They clearly showed that their defense knows how to pick it up and make things happen when the offense is struggling like they did last night. Only championship-contending teams are able to do what they pulled off last night.