The important thing to the story is determining exactly how the villain challenges the hero as an individual - not whether they're going to blow up the world or how, but basically how the two get under one another's skin so to speak.
In that regard, there isn't another established Superman villain who comes close to the modern versions of Luthor. Ignoring the whole you-made-me-bald nonsense, Lex's motivations for opposing Superman range from the completely narcissistic to the rational all the way to a twisted sense of responsibility to oppose what he believes is a public danger.
In that regard, there isn't another established Superman villain who comes close to the modern versions of Luthor. Ignoring the whole you-made-me-bald nonsense, Lex's motivations for opposing Superman range from the completely narcissistic to the rational all the way to a twisted sense of responsibility to oppose what he believes is a public danger.