Matchup thoughts:
When the Rams have the ball:
The biggest mismatch I see is the Bears' small corners (none taller than 5'10") trying to cover the Rams' big receivers (all at least 6'2"). The Bears' front can put some pressure on a suspect Rams' O-Line, but I think Cam can buy a little time and his receivers are not going to need much of a window to get open. I don't see the Rams running the ball well, particularly when Knighton is.
When the Bears have the ball:
The Rams have OK corners but their safeties are weak, which is a problem when you're going against a combo like Green and Jackson. Underneath coverage is also going to be an issue, with Sproles, Olsen, and Clay matched up against just so-so coverage linebackers. Bennett / Kruger / McCoy can get some pressure, but the Bears' OL is decent. I think the Bears would score points here, except ...
GUYS, TONY ROMO ENDED THE SEASON ON INJURED RESERVE. HE AIN'T PLAYING IN THIS PLAYOFF CONTEST.
This might be a pick-'em with a healthy Romo, but with a replacement-level QB I see the Rams running roughshod over the Bears. Rams by 9.