(Well so did Mary Baker Eddy -- believing in a "christ" -- and working that "christ" into the title of her new religion, "Christian Science" -- neither Christian nor Scientific!)
No, I weigh in on one of Godzilla's notes:
Who is God? Mormonism believes that the universe is populated by an uncountable number of Gods, each tending to their own planet and making spirit children with their multiple wives. Christianity is monotheistic trinitarinism - One God, three Persons who share the same - for a lack of a better word - essence that is God.
Otherwise, we have a "pick your Christian brand":
Choice A: One God
Choice B: Three gods (might include some non-temple Mormons)
Choice C: Thousands or millions of gods (includes more temple Mormons -- who aspire to godhood)
I'm sorry, but a gymnastic pretense of "polytheistic monotheism" tends to yield such damage to sheer language that we need to use a common autowreck phrase to describe it: "It was totaled."
Or perhaps epic failure