Full PPR scoring
I would lean Ingram or Johnson. Ingram is the solid play but the match-up against Carolina on the road means he could put up a 0, whereas Johnson will be primarily used as a receiver in a favourable match-up in Indy. With PPR scoring, I would say play Ingram if you already have some high risk/high reward RB/WR’s in your lineup, and play Duke Johnson if you have a solid core of dependable RB/WR’s set to play.
Ingram hands down his an RB2