Look at the stats and focus on the two years prior to Enos. They tell you what you want to know.
The mobility of all 3 of the QB's being mentioned adds more to the offense that was being called for TVD any way. Even Mario wasn't against Read Option, Zone Read and RPO's based on what was ran at Oregon. In fact, I believe he encourages it. Dawson can run all of that. TVD's lack of mobility hurt our offense and made him a target for being hit and getting injured despite having a really good OL this season. TVD's greed in throwing into coverage, locking on to Restrepo or the primary target much of the time hindered this offense. Also, TVD showed a tendency to want the big play and throw into coverage vs settling for what was right in front of him. We had 2nd and 3rd receivers open all season long. All three of those QB's like to improvise when the play breaks down, something TVD didn't do well. At the very least, they will take off and gain significant yardage that TVD couldn't.