Teams with low-scoring offenses can sometimes beat better teams because if the score is low, the game is close and they can sometimes steal one.
The problem is that it also keeps the inferior teams they play in the game as well. They get hope and confidence. Sometimes they can steal a game themselves that way.
So, if the 9er offense is as conservative and low-scoring as many fear, expect to beat a better team or two, and expect to lose to some inferior ones.