Nope. Human drama, faithfulness to the original material, pacing, performances. Pretty much whatever makes any movie a good movie. The original “Superman” was outstanding in those (the dated effects now kind of remove you from the action, but that’s to be expected), which is why it was such a great idea to make “Superman Returns” a “pseudo-sequel” to the first two Donner films.
Superman 2 was made by Richard Lester who improved on the original in every way. It’s a great film.