I think Parris was always considered the better prospect between the two, he just needed to fill out and become a full sized heavy, he was more a 220 when he first go to Michigan (and not even a fully jacked 220) That being said, yes, he would need to figure out Parris ... Kerk is much much better at free than folk also.Cassini definitely has a future in freestyle.
However, he's been passed by Parris since both arrived on campus. He needs to figure that out if he's going to make noise on the senior level.
Cass did really well this summer in freestyle, win over Dom Bradley and I would not be shocked to see him win U23 Gold at all.