I disagree about our RBs. I think the run game overall looked improved over last year. So I guess we just disagree there.
But, our RBs are Kamara, Williams, Taysom Hill, and Mims. The only guy he might be conceivably better than is Mims and Mims is really here to play the receiving back role if AK gets hurt or needs a rest. I'm not sure Perine would be better in that role than Mims and it's conceivable that Hill would get those catches if Kamara is hurt or needs a rest. I also don't know if Perine really fits an outside zone run scheme. I know Denver isn't running that but I'm not sure if the Bengals do.