Deadliest religion ever?

[SuperSentient]

Call it what you want, everyone reading the question knows that it doesn't literally mean a religion killing someone, but the people influenced by their religious beliefs. I highly doubt you thought that either. 
"Correctly" and "incorrectly" conducting violence is your false dichotomy of objective religious morality that varies ideologically, so no, your point against the question is not valid.

No, correctly and incorrectly conducting violence can easily be ascertained from the religion's foundational documents/teachings and has nothing to do with objective morality. It is silly to say a religion that teaches "turning the other cheek" is responsible for violence. It is clearly man-made add-ons and illegitimate reasoning that gets you to violence. You can complain all you want about a particular church organization's actions, but to conflate those with Christianity is shoddy reasoning.

A religion's foundational teachings are what may convince a person to commit violent acts, a religions teachings are what people may use to justify their violence. Ideologically, their religious beliefs applied to the world are interpreted to be used for certain actions. "Correctly" and "incorrectly" is exactly a false dichotomy, since what you claim to be incorrect and correct about a religion isn't necessarily objective among religious believers (which are what make up a religious group), but is dependent upon the religious conception. The only way out of this is to assume the objective truth of a specific religion that gives falsifiability to religious believers that make up the religious group and their teachings.