Don, if this team had ever played a B1G game without mental mistakes during Lovie's tenure, I'd be inclined to agree with you!
But there's a lot of things this team hasn't done a single time over four years.
1. Successfully defend a read-option QB
2. Get through a game without significant mental mistakes
3. Keep the defense off the field
4. Make an effective halftime adjustment on either side of the ball
5. Do a remotely effective job of taking away the opponent's strength
I could go on for a while here. I know it's defeatist, but I'm officially done believing they can manage any of the above until this team proves otherwise.