Arguably Terzic would have been a better manager. But all the slander Kompany is getting is because his team was relegated, and that’s it. Yes, it’s a huge factor for any manager’s profile, but there are definitely a lot of other things that should be taken into account, and the Bayern board did exactly that when they were trying to look for a new manager.
Unfortunately, Bayern recruited Vincent Kompany before Edin Terzic decided to leave Dortmund, but even though Bayern were able to recruit Edin Terzic, this is not enough to prove that the coach is better than Vincent Kompany because we have not yet seen how Bayern Munich will perform next season.
Many people don't like Kompany because he couldn't be a good coach for Burnley and made the club relegated but we also have to realize that the resources the two clubs have are different so we have to give him the opportunity to see how Kompany trains Bayern with a better squad.