Getzlaf is slow and prefers a cycle game, whereas Sprong hasn’t shown much ability to cycle to this point. Getzlaf will pass Sprong the puck, Sprong will likely not score, Getzlaf will get to the offensive zone just in time to hoof it back down the ice to try to get it back, rinse, recycle, repeat.
Steel, Terry, Kase, Silfverberg, Henrique are all at least if not (easily) arguably more gifted offensively than Sprong. Sprong has a shot. That doesn’t mean he reads the play well or uses his teammates well. Let him play with those players, against easier competition, with lighter responsibilities. Beating his head into the wall of top pairing D/shutdown forwards is hardly going to build his confidence.