This isn't the usual and customary Texas defense. MSU was basically being driven by an ultra-athlete at QB who could turn chaos into yards gained. I don't know that they have anyone else to competently advance the ball.
Texas just has to score more than 20 points to win. That covers two opponent FGs, one TD our offense coughed up, and one TD enabled by us committing 6 individually enforceable personal fouls on a fair-catch kickoff.