To which one of the angels did he ( God ) call son? ( Hebrews 1:5) None- Michael is an ARCH ANGEL, like Gabriel- apparently, there were seven? Only Jesus was called son - he sits on God's right hand mentioned several times in scripture.
Re Jude vs 9- Michael the archangel disputing with Satan, and expanding on Strikers point- Jesus died in 33 ce- yet Jude, written years after Jesus' death, is saying Michael, (not Jesus way back when), disputed with Satan. If Jude understood Michael and Jesus were the same, would he not have referenced that important point? Wasn't Jude the brother of James - both Jesus half brothers who would know?