SD....I understand what you are trying to say. But you're missing one tiny detail. You are smack in the middle of what you would likely deem as ridiculous....and that's pitting one religion against the other.....but you are doing so with only part of the picture.
Some Christian denominations teach that other groups which consider themselves Christian are in fact outside of the faith. Many conservative Protestant groups consider the term "liberal Christian" to be an oxymoron. They consider Mormons, Roman Catholics, United Church members and others to be non-Christian. They are seen as following Pagan, Gnostic, Humanistic beliefs that are divorced from "true Christianity."
Bottom line is, I think it all depends on where your vantage point originates.