User blog comment:Victory awaits/The actual outcome of Apocalypse?/@comment-26982641-20161001101547/@comment-1975828-20161001203906

I guess Michael didn't use John because he himself was obsessed with destiny, and John was already dead. It was Zachariah's idea to bring back Adam and use him as bait, but never as a vessel. However, time was running out, and Zachariah was dead so Michael had to take Adam.

I also believe that due to his obsession with destiny, Michael still had hope that he would win while using Adam, though I personally doubt he had as big of an advantage as he naturally would. Michael is stronger than Lucifer, but while on Earth, the amount of power angels possess depend on the vessel. That's what I believe too. :)

Yes, I agree that John!Michael is stronger than Nick!Lucifer, but Michael wanted to rely on destiny, which said he would win. Lucifer was willing to take the chance, however. :/