Speaking strictly plot, I don't think the following characters have too much on Edward:
Relm
Cait Sith
Vaan
Penelo
Gameplay mechanics they all beat him cause LICENSE GRID and MATERIA and ESPERZ but yeah.
Keep in mind that Edward can play his harp so hard he can make elves from caves half the world away hear it, and he eventually becomes the general of the army of... whatever that town was called with all the leotard chicks in it. He's not totally worthless.
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No problem!
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