Flacco may not match up well unless Rice can gouge us, which is a possibility because he is so explosive and powerful. But Flacco just a sitting duck in the pocket. He is an old school style QB that plods along when he scrambles. If his protection breaks down enough for Doom and Miller to get in on him I think he will struggle big time.
On the other side I'm not sure Ravens will get to Manning enough to keep us from scoring about 28-31 points. I just don't think the Ravens can keep up with the Broncos.