Approaching this from a marketability standpoint, either Dobbs or Ferguson could do this, provided one wins the job and excels.
Dobbs has the rocket scientist thig going for him, ESPN would eat that ish for dinner if Dobbs made great strides on the field.
Ferguson, meanwhile, is a bit of an unknown quality to most and ESPN loves to crown RS freshmen as the next big thing (Mariota, Manziel, Winston, etc). If he were to win the job and pounce on a quality opponent or 3 ESPN might pop a boner for him and start marketing him as a "bad boy" because he's white and has a sleeve tattoo.
So pretty much, if either of those dudes plays at a really high level ESPN will manufacture story lines and turn them into the next Manziel of Winston.