pawsplay
Hero
But this is true across the board.
How many times have people argued about whether Merlin or Gandalf is really a wizard in D&D parlance? Conan is less of a D&D barbarian than he is a fighter. D&D has always had trouble approximating characters from other media, particularly in earlier editions.
I think we can generally agree that most fantasy literature does not use the D&D magic system. Heck, plenty of official D&D books don't seem to.
But Elric is not simply a fighter. He's one of the most capable sorcerers of his day.