Bears/9ers which phase will score the most points

This game has been pegged for months as a defensive battle, and with both starting QBs out, it just got even more interesting.

So which Bears phase will score the most points?

Traditional offense (passing/rushing TDs)
Defense (INT/Fumble TDs)
or Special Teams (FGs, K/PR TDs)

I think we will be pleasantly surprised by our offense tonight. I expect they'll do a decent job against a solid 49er defense. I don't expect greatness. Just a decent enough game to give us a win tonight.