Tim has yet to win back-to-back rings.
MJ had TWO three-peats. He got his 1st 3peat, retired for 2 years, came back and got another 3-peat. If he hadn't retired, he would have 8 straight championships. An 8-peat. Reminds you of the Bill Russel era. That's how great MJ was. There was just no discussion. Opposing teams would enter MJ's arena and even THEY knew how much better MJ was.
When MJ retired, players were asked if they would like MJ to come back. Most players were like 'NO!!!!!!' Dan Majerle is famous for saying "Nooooo, please dont come back again. Give others a chance to win"
Duncan on the other hand wins one every few years. Tim is best PF ever, but not MJ. Tim didn't even win MVP Finals last year....