You could run a Tyrod Taylor kind of offense with Tebow. But no one really wanted to do that either. I think he falls into this category.
But he doesn't have the arm talent Kaepernick does. CK might be inaccurate, but he can do pre-snap reads and through to a spot. He also succeeded in the pocket last year for Kelly to a certain extent. Tebow needed players to run themselves open before he threw. His success in the pass game came when Defenses couldn't get pressure to him and had single coverage downfield (see the Pittsburgh playoff game).
Even that would only net a score or two a game.