Everyone wants to talk about Kaepernick being the difference but IMO it is and always has been about the OL and DL matchups and I still don't like how GB stacks up against those guys. In particular, I don't like how our DL matches up with their DL because our run defense and pass rush has been awful and it's going to be really apparent on Sunday.
The only wild card (no pun intended) is how SF responds to the weather and conditions. The best case is they turn the ball over a few times or make mistakes to let GB hang around because on paper this is a big mismatch.
SF 24 - GB 13 - hope I'm rong