Actually for me Thomas Tuchel failure when he was at the Chelsea club to improve his performance was not Tuchel fault but a player who was not enthusiastic and inconsistent in every game.
We certainly know that Tuchel is one of the best coach and certainly always provides the best strategy to build a stronger club and several times Thomas Tuchel has tried but failed.
So it all depend on both parties if later Tuchel is at Bayern Munich and the player have high consistency and are very solid, it will definitely be easy for Tuchel to build this club so that they can achieve their dream in the champions league.
When comparing Thomas Tuchel with Pep Guardiola or Klopp, in fact they are both great coaches, it's just that Guardiola has more solid players and there is also Haaland who is his mainstay player
Even without Haaland Guardiola's team would still perform better than Tuchel's they're both great coaches no doubt but Pep should be more applauded because he's proven himself in 3 different league winning major trophies from all apart from Bayern where he failed to win the Champions League but he's won a Treble for Barcelona and recently in England with Manchester City, the only coaches after Sir Alex Ferguson that should be compared to the level of Pep are José mourinho and Carlo Ancelotti.
Tuchel was great for Chelsea helping them In winning their second champions league trophy but I think it was the change of owner that made him loose focus the next season not only him but the entire squad he had then where affected and if only the new owner was patient enough with him and backed him with funds like he did with Potter, Chelsea fc would have stand a better chance of qualifying for the champions league or finishing close to the top four last season, and that is what he needs at Bayern Munich, the full backing of the board with funds to recruit quality players with winning mentality, that would help them challenge for the champions league this season.