Unfortunately, there are two types of torture. If they torture a terrorist, and he reveals a terror plot and lives are saved, that is, I suppose, "good" torture.
Then there is the type as practiced by the Soviets under Stalin in which they tortured a person who would confess to anything to put an end to the torture. No information is discovered in such torture, and the victim reads a list of his offences during a show trial and is taken out and shot . You basically inflict enough pain that the torturee begs for death. This is "bad" torture.
Then there's Americans slowly beating innocent prisoners to death, like in Abu Ghraib and Bagram, under the mistaken view that they're withholding information, and discovering the error after the prisoners die. One of the hazards of "enhanced interrogation", and torturous definitions of torture.