Well the two are along the same lines then, the JW's and the Muslims.
Regarding Jesus as the archangel Michael.
Jud 1:9 Yet Michael the archangel, when contending with the devil he disputed about the body of Moses, durst not bring against him a railing accusation, but said, The Lord rebuke thee.
reading this, Michael is asking for the Lord to rebuke, so therefore the two cannot be the same, Jesus and Michael, would he not have said 'I' rebuke thee? had he been Jesus.