The rules of the debate are simple. Batman and The Punisher are locked in a room together. There is no way out. Batman does not have his utility belt or any gadgets, and The Punisher has no weapons of any kind. Neither is allowed to harm the other. Each must attempt to convince the other that their stance on guns and killing is wrong. Either Punisher walks out of the room vowing to never use guns or kill again, or Batman walks out to get a gun and kill every criminal in Gotham. Until then, they stay. Neither will be allowed to leave the room until one has 100% totally, completely, and irrevocably convinced the other that their stance is wrong and they should adopt the other stance instead. No tricks, no faking concession to be able to get out. So, which one convinces the other?