Re: Mike Davis and the Heisman...
I think it's the "Lattimore Effect" but a differeint one to which you allude. I think Lattimore worked with his teammates in the HB position to teach them some of his techniques. I have seen MD push for extra yardage and fall forward during a tackle the same way Lattimore did. I also see him reading the line and finding the holes before they open.
Of course Davis adds his own spin with the breakaway speed he seems to have honed.
That all being said, I doubt he will win the Heisman due to the fact that there are a couple of quarterbacks who are able to put up video game numbers due to weak scheduling. One of them though will be out of the conversation by the end of the season. ;)