*Noodle leaps on top of nearby table and spins furiously (while performing his patented funny cowboy dance), flinging out potato chips like shuriken.*
[ot]Hey Gorny, just hit level 38! Currently flying from Orgrimmar back to Desolace.[/ot]
No one beats the Batman. Dude has a kryptonite ring that Supes gave him in case he ever gets out of hand. Summary: Superman knew that there was only one person on earth who could take him down if he ever went bad. Batman.
Conclusion: Batman is the shiznit.
He has a ring that he keeps in the Batcave in the mainstream thread. In the Frank Miller Dark Knight Returns (one of the top three comics ever), he adapts it to an arrow for the one armed Green Arrow to fire.