Sermon/Teague, both are very good running back. They would start on any SEC teams and would've produced similar numbers as a starting RB. Sermon is very quick and physical RB. He remind me little of Ezekiel Elliott and Derrick Henry combined together. Little of Elliott and Little of Henry.
If Sermon played in the championship game after his injury, I think their running game would be little better. Probably would spot 7-21 points, but it wouldn't make difference. Teague was open throughout the game, Fields just didn't always see him.