Xabi did not have the opportunities that Tuchel had. We realized that Xabi's scouting staff, team coaches and technical knowledge are very good. It is not easy to create a squad that can compete with Bayern Munich. Xabi achieves the difficult. Leverkusen became a better team than Dortmund thanks to him.
It further makes it more interesting with the fact that Xabi is even a yong coach a s he is achieving this already. It's very possible he could bring to an end the era of Bayern Munich dominance in the bundesliga, if he succeeds in winning the league title by the end of this season as this happens to be one of his targets.
Bayern Munich under the management of tuchel is doing so well and definitely still remains fierce amongst other teams in the bundesliga especially this season where they have been winning recently with great goal margins. Xabi is really building a formidable and contending force against tuchel's but then only time can tell if Xabi has got a team who can withstand the fierce champions of the bundesliga.