Not a Hebrew scholar, but some cursory reading seems to indicate that the Hebrew is unambiguous about being a question, not a statement: meaning of "Michael"
You may be right and I may be crazy - Billy Joel.
The reason why I don’t agree that it is a question is for two reasons.
1. Michael is a real being, doing real things. He’s not written about in a commentary format in the same sort of format that the leviathan is spoken of in Job, where Job is commenting on the power of God and whatnot.
2. Michael contends directly with Satan. Satan is the reason we’re in this mess and he’s the main antagonist. It would seem a strange thing that God would pass the responsibility off to somebody lesser than Satan was. It could only be appropriate that God Himself takes care of business when dealing with him.
Just to be clear, the Adventist understanding issue is not meant to lessen the position of Christ, for He is God and eteral. But rather, it is bringing up the name Michael, which has been given a lesser weight by other Christian denominations.