re: I now know why Bama's line is so good.

On the scoring drive alone there were 3 penalties not called. Montgomery had beaten the tackle and was about to sack the QB when the tackle stuck his arm out and clothes lined Montgomery. They completed the pass, no call, first down, big play.

The TD play there were 2 holds and both were in sight of the back official. Bama does such a good job of hiding there infractions that I saw it right away. That would have been actions of dismissal had that ref called that.
But the 6 or 7 penalties not called had nothing to do with the outcome. We were just outplayed.