What makes Christianity better than any other religion?

Almost every religion has a miracle producing savior, so why would Christianity be better than anything else? From what I have read and heard from Christians that I know say that it is because it is the only religion that has salvation by faith, but to me that just means you don't have to earn a place in heaven. And by that logic Hitler would go to heaven, because he was a devout Christian, and Gandhi would go to hell as a "pagan".