Except Chryst never employed the same offense as what was done under his time with Bielema. A lot of his plays that he was calling during the Bielema years never came back. No movement of the WR's, the best TE had to line up every single play in the traditional TE spot when he was the HC. The run plays had to be in between the tackles nothing outside no bouncing the play outside of the tackle. A WR pitch play was also thrown out. The end around was also eliminated. When he did have movement on the offensive side it would be one or two plays a game and then it would disappear for like 3-5 games and then come back again one or two plays to then disappear again. He had the players to do everything that he was doing when he was the OC under Bielema. Why he wouldn't do this I have no idea. The reporters never asked why his offensive play calling differed so much when he was the HC versus as the OC.
His biggest crime was having a NFL style TE and lining him up 100% of the time in the traditional TE spot. He had the option to bring in an extra OL and place them in the traditional TE spot and have Ferguson on the outside in the red zone to take advantage of his height. He never did this. While when he was an OC under Bielema they would do this. They would put the TE out in space from time to time and have an extra OL or the backup TE in that spot. PC was the complete opposite of when he was the OC compared to when he was the HC. Maybe the HC got to his head or something but he just wasn't the same at play calling when he became the HC.