In a backfield with as many contributors as the Ravens have, labeling one as the clear cut starter isn’t realistic. They’ll all have their roles.
Dobbins and Ingram will probably share most of the carries and they both have solid receiving ability. It wouldn’t be too far fetched to assume that both of these backs come close to eclipsing 1,000 rushing yards respectively, especially since the addition of Dobbins will likely lower the amount of carries Hill and Edwards get.
But given his age and potential, seeing Dobbins eventually get more carries towards the end of the season is certainly a possibility. But it’s not fair to flat out name him the starter over Ingram.