What do you think about J.T O'Sullivans performance?

The 49ers haven't had a 300+ yard ping performance since 2004 and today against a good Seahawks defense he torched them. I personally am not a 49ers fan (Broncos, Woot Woot!), but I remember how the 49ers offense sucked so bad last season. So what do you think about this teams offense? Things to come? Or fluke.