Aside from that really bad INT in the game, Manning was actually pretty good, so....... Yes, the INT was the dagger, but he also threw what should have been the game winning TD to DT...
Really, how many passes did Manning throw that made you go WOW! Really, I couldn't say more than 3. He forced a lot of throws, and just did not make enough big plays. Not a great performance, and was easily outplayed in every way by Flacco. Still love him though!