No angel is ever worshipped in Scripture; therefore, Jesus (worthy of worship) cannot be Michael or any other angel (not worthy of worship). The angels are called sons of God (Genesis 6:2-4; Job 1:6; 2:1; 38:7), but Jesus is THE Son of God (Hebrews 1:3, 8; Matthew 4:3-6; Galatians 4:1; John 14:9; John 17:10).
Geneva Bible Notes, 1599 - Hebrews 1:4
(4)Being made so much better than the angels, as he hath by inheritance obtained a more excellent (i)name than they.
(4)Before he comes to declare the office of Christ, he sets forth the excellency of his person. First of all he shows him to be man, and that in addition he is God also.
(i)Dignity and honour.