I don't think anyone thinks Bennett will be drafted. Bennett himself is talking about going to law school. Bennett is about 5-9 and doesn't have a very strong arm.
Too much credit is being given to Bennett for this year. He wasn't asked to do a ton. Georgia's defense was incredible and Bennett's supporting cast was great. Bennett's job was basically to hand the ball off, make short throws to playmakers in space, and to run some play action.
Georgia won the national title because of an incredible defense.