This was facing some stiff competition too, Moore might not be perfect, but he won games and did so in extremely effective fashion.
In fact, there's not actually any reason he shouldn't be the starter. The line was missing both tackles and had back ups in at guard, Williams was out too and he still threw for 8 Tds, 2 ints over 1000 yards and a 98 QB rating.
Give him an offseason being groomed as the starter with a full compliment of players around him and there's no reason not to think he can improve upon what he did last year. In fact there wasn't even a game where he played poorly.