That’s especially funny to me because:

Superman Returns is in a separate continuity from III and IV
Superman II: Donner Cut is in yet another continuity; neither Superman III nor Superman Returns can function as a sequel to the Donner Cut of II
As far as I can see, the theatrical cut of Superman II is not included, so if they’re going for completism by including both branching post-II continuities, they got lazy there for no good reason

Oh, but yeah, the box art is all total garbage.