I think it'll be close. Hooper has that natural finishing and tends to be in the right place so will probably start better but RvW's quality will shine through and I think he'll just edge it. Hope to see some good goals! (Though any goal is a good one)
It really will depend on who finds their form first, as they will then be given a run of games. I expect only one of them to be playing at any given time more often than not, as seems to be Chris Hughton's current preference (which may well change this season, who knows?).