Logic is not the friend of mystical dualists.
Humanist logic is not the friend of revealed Scripture. I say "humanist" because it begins with the notion that unless something makes sense to the man, it cannot be true.
Defining God according to a man's understanding just doesn't strike me as a good idea, particularly when doing so requires one to not accept the plain sayings of plainly stated passages.
All these passages that you end up having to show these lengthy or frivolous seeming arguments about how it shouldn't be understood the way it so plainly seems.
And I don't know who those "mystic dualists" are, myself, I'm just a guy who believes what I read. I don't have a problem with God being so transcendant that He's not really understood by me.
Of course, it's man who is not fair. We don't understand how or what gravity is, but we don't question it. We just observe what we observe, and figure, maybe some day we'll understand.
Much love!