Kompany is new to the business but that doesn't mean he can't be up to the level of coaches like Pep Guardiola, Ancelotti or even Mourinho, he has made some mistakes but he's still on track to me. And for Kompany to last long as the manager of Bayern Munich I think winning the champions league will give him full ground at Bayern. For some coaches that started with with him like Lampard and Rooney (as ex footballers) I think Kompany is the best among them all, he just need to give the club something they have lost and that's the glory of Bundesliga, getting them that trophy is going to be a big win for him and I don't see the management sacking him.
Kompany is a good coach and nobody saw those qualities in him, until he came to Bayern. There are also some ex-players that became a coach and they are doing pretty good. Look at Inzaghi and Xabi Alonso in their respective clubs, they both won their domestic leagues last season. I am happy to see Kompany doing great with his new clubs despite all the critics he had in the beginning, when he was appointed as Bayern coach.
What makes us so sure about him being a good coach? So far we know that he has done badly before Bayern, hell last season he relegated in premier league, so the only "good" thing that we have in our hands is that he is leading Bundesliga with Bayern Muncih right now. Is that the thing that makes him good? I mean is really being number one with Bayern Munich that difficult of a job that we would consider him good for doing something like this? I am not entirely sure about that at all.
I feel like there are a million people out there who can manage Bayern Munich and be first place with them. Plus the season isn't even over yet, we have just 4 points difference with Leverkusen and if Leverkusen keeps their momentum going, then we could see different results.