The problem with arguing over what Christians actually believe is that there are so many different beliefs that all call themselves Christianity. You can find some group that believes almost anything, and wonders why everyone else doesn't believe it. Even really unusual beliefs most people never even consider, like the idea that the Old Testament "God" is Satan in disguise, have adherents, or at least had them at some point. (I'm guessing other popular religions are similarly hard to argue about, but Christianity is the one I'm most familiar with.)