Or it could be that we're a team starting a rookie 4th rd pick at QB, and the two teams we've faced have said there's no way they are going to allow them to find all sorts of run lanes to beat them and instead want Prescott to throw.
I suspect we'll see more of the same until 1) Romo returns and shows he is fine and/or 2) Teams see enough of Prescott on film to decide he is the real deal and start playing some other types of coverages