While I'll definitely be rooting for the 49ers, I don't see winning out being likely. I don't think we're a 13-3 quality team. Trubisky is playing very well and the Bears game looks much tougher than it recently looked. Minnesota is obviously the biggest challenge, and I fully expect a competitive game in Detroit particularly if we have something to play for.
Yes, in a vacuum, every single one of these games is a winnable game, just playing the odds I would guess we drop one in there somewhere. I just don't see a Baltimore Ravens type jaggarnaut on our side that can be reasonably expected to dominate average to good teams. I would guess 3 out of our remaining 4 games are relatively competitive.
I think the most likely scenario is finishing 12-4, winning the division but playing on WC weekend. I'd put winning out and going 13-3 about on the same level of odds as dropping two and finishing 11-5.