TuTu is extremely valuable but limited to his ability to attack certain defensive structures in the passing game. Yesterday the run game was dominant partially because the long completion to Atwell early in the game made the Cards respect the deep ball. Once the advantage was secured, it was best to run all day since the dam had already broken. Tutu is great for his role, and that role is to compliment the options Sean has in the receiver room. Safeties have to account for him now.
I still believe he is one of the most improved players on the roster. But Sean knows if he's hitting his landmarks regularly and that will determine if he stays like Kupp or goes like Everett.