Again, there was an uncalled clip on Breaston's return. And on the long Arrington catch and run that led to your second TD, Breaston practically raped Troy. Plus, on that same play, it showed two Arizona linemen doubling up on the Steelers NT. Each of them had one arm wrapped around the outside, holding him. It looked like a group hug. Instead of 1st and 10 at the Pitt 28, it's 2nd and 14 at the Arizona 40. Think that might have made a difference?
Brian Billick, hardly a Steeler fan, remarked that your O-Lineman that got tagged with those holding penalties on Harrison should have been tagged on just about every single play from scrimmage (Maybe that's why he lost his head on that punt?).
There are many uncalled penalties every game going both ways. The majority of them are holds and clips, as there are too many blockers, too few refs to account for each player. It happens.