This game looks like an easy under to me. The Chiefs offensive line is beat up and bad at pass blocking but surprisingly good at run blocking. Andy Reid has adjusted his playcalling to suit his line's talents and to protect his quarterback. Knile Davis could get a lot of playing time even if Jamaal Charles plays and I expect him to get a lot of carries as the Chiefs still do not trust his passblocking.
Throw in a primetime game at Arrowhead on Monday night and a betting public that will be leaning on the Patriots going over and I'm calling this one an easy under play. I'm waiting to make my pick just in case the public is on the over and makes the line go up. I think it's probably going to stay about where it is now though (44.5).