You seem to think you have devised your own Kobayashi Maru. You haven't. It's a contrived situation with no connection to the real world.

In your scenario, the prisoner's guilt is a foregone conclusion, as well as his possession of all the details necessary to prevent an enormous tragedy. You're also assuming that torture will divulge precisely what you need, when you need it. As such, I could reply, "Sure! Torture the bastard until he tells us what we want to hear!" But then I'd be buying in to your fantasy. Since I don't buy into it, I choose not to play your game.

Capisce?