Having both the nature of God (Jesus is a exact copy/representation/image of God) and the title/position of God (Jesus) is different than Satan simply having the title of God, but not the nature, or rightfully receiving/sharing the worship/glory/honour. That PDF on the Father/Son Relationship admits that Jesus has the nature of God and the title of God, but can't admit to worshipping two beings that share the nature of God. I mean, if you're a polytheist, that's fine. Just come out and admit it :)
I can't see Jesus being Michael. Heb 2:5 says that God didn't subject these things to an angel, but only to his Son.