I watched the vid. Looked like the running had more to do with it than the passing game. In addition, I didnt see anything of note from the QB that would lead me to believe we should tank the season in order to obtain a high a draft choice to select him. He was not hurried at any time, and always threw to the first receiver. He did not scan the field looking for options. He looked like a game manager to me.
I'm not saying the kid won't be good, I really don't know. But that video certainly isn't evidence that he's going to be top pro QB.