I think Bernard is a sell high.
They Bengals didn't draft Hill to ride the pine, nor has he shown anything during preseason to warrant his lack of action. Marvin Lewis has obviously been tentatively to throw rookies into the mix right out of the gate. Hill's touches WILL increase, at the expense of Bernard.
But how do you sell high on Gio after week 1? His points were there in PPR, but he didn't do anything to dramatically change his value one way or another. You may get some bump in value from the people who were scared of a timeshare, but don't know if that combined with his week 1 production nets you any huge value.
I don't necessarily believe in the "they didn't sign/trade for player X just to bench them" narrative, especially at RB. I've made some offers to trade Marshawn Lynch for him (in a league with keeper implications, and not outright). I think his work in the passing game will keep his floor high in PPR leagues, even if Hill's carries increase.