Heroes has borrowed liberally from the universe of Marvel's comic book X-Men. Both TV show and comic book are about super-heroes who gain powers through genetic mutations. And both have their bad guys. Heroes' Sylar is a mommy-obsessed nerd who wants to be the most powerful mutant in the world. X-Men's Magneto is a mutant-supremacist who thinks humans should be the slaves of his master race. Who would win in a fight?