I think the difference lies in that saying 'Jesus is God' is an part of the affirmation of the Trinity. Jesus is God, the Father is God, the Holy Spirit is God. They're all God, (and there's only one God) but they are three separate persons. Saying 'God is Jesus' can be interpreted in a couple different ways that reject the trinity. It could be saying that Jesus is the sole person in the Godhead, or it could mean that Jesus is just a form of God, or it could be saying something else like that. Perhaps some more context about the book's concept of radical Christianity would help pin down the exact difference.
Jesus claimed to be God, not a prophet. But yes, He did reveal a new revelation, and the writers of the New Testament did write what at the time would've been new inspired words of God. What I meant was that Christian groups split off from one another not because someone revealed new revelations from God, but because they disagreed on theology and interpretation of the Bible.
I wasn't aware of the origins of the Seventh Day Adventists. That does throw a wrench in my point, although it doesn't look like she contradicted any essential doctrines. (although the group did reject the trinity initially).
Yes, I would like to see that when you do it.