Castonzo's story and athletic success will also be huge factors in his favor. Everyone nominated has a special skill, but few skills are as high profile as playing DIA football. Castonzo has the added benefit of being great. Assuming he is healthy, he could be a first round draft pick/All America candidate. Let's face it, he is a better football player than Myron Rolle. The committee would love the brainy left tackle who is on ESPN between chem labs.
The other factor is how much Anthony even wants this. To win he will have to put in plenty of time, prep and effort. He is clearly capable. It is just a matter of where it falls in his priorities.
I hope he does succeed. While it won't get the same type of attention as a Heisman run, it would be as important to the football program and to the school. Castonzo already represents so many things we want BC to be, that it would be nice to have the world recognize that too.