The only "perk" to Rush is that it appears NFL teams are actually mildly respectful of the fact that he can, and will, throw it down field. I think that had at least partially to do with why the running game was effective yesterday.
I think most NFL teams, when attempting to defend Huntley, would put 11 defenders within five yards of the LOS, on every snap, and say "go ahead Tyler, I fucking dare you to throw the ball". And I don't think the read option is effective when there's 10 guys defending the run game.
I think Huntley's effectiveness in the 4th quarter, especially on scrambles, had everything to do with the style of D the Rams are playing up 14 in the 4th quarter. They'll let you run all you want between the 20s. Then the field shortens, and all of the sudden problems arise. Not surprising.