The Niners have went up against some ok defenses this year and did ok. They ran and passed all over one defense that was the "best" in the NFL at the time.
Yeah 1 game against a good defense doesn't mean a whole lot. 1 100 yard runner all year for NE, that was Rice. Gore's carries are being limited recently for some reason, most likely because they want him fresh for January. Gore will struggle to get 100 yards wouldn't be surprised if he averages 4.5+ per run. Kaepernick better be ready to get into a shootout with Brady.