Jesus is not and never was Michael the Archangel. This is a teaching that Russell borrowed from the Adventists. Jesus is the son of God, the Logos, the word of God. He is not a created being but has always been with Jehovah God. He was begotten - not created. In his nature, he is Divine like God. Jesus is totally unique and above all angels.
When I left the WT, this was the first teaching a researched. Over a one year period, I broke down all the "proof" texts the WT gives and looked at many other scriptures that speak about Jesus and his relationship with God an all of creation. I compiled it into a research report called Is Jesus Michael the Archangel? If you would like a copy, pm me your email address and I will forward it to you.
Since I completed this research more than a year ago, I have learned even more about Christ. The Apostle John wrote the most about his nature and relationship with Jehovah in the book of John. I would highly recomend that you read it. I did not go too much into detail about Jesus' nature in my paper as the main point of it was to prove or disprove either way whether the bible shows conclusively that Jesus is Micheal. By the end, I of course found out that no, he is not. In order to come to that conclusion like the WT, you would have to read things into the scriptures they use which are not there at all. Again, I would be happy to send it to you or anyone who would like to know how to use the WT's own "proof texts" to prove Jesus is not Michael.