So what happens if we pick the best XI from all non-Bayern Bundesliga players and let them play against Munich? Would they be able to compete? Obviously, this is only a though experiment, because in practice we know they aren't used to play with each other and maybe the combination makes little sense from a tactical point of view. But we can use this as a baseline. If Bayern is better than the rest of the Bundesliga combined in this thought experiment, than in practice they will be way better than them.
Let's start with the Bayern XI, ignoring injuries and tactical constraints.
|Thomas Müller||Bayern München||211.97||26.08||212.07|
|Mario Götze||Bayern München||200.77||23.33||205.91|
|Robert Lewandowski||Bayern München||198.27||27.08||200.64|
|Manuel Neuer||Bayern München||195.47||29.50||199.66|
|Arturo Vidal||Bayern München||178.75||28.33||183.30|
|Arjen Robben||Bayern München||175.90||31.67||190.26|
|David Alaba||Bayern München||174.24||23.25||179.55|
|Jérôme Boateng||Bayern München||170.79||27.08||173.09|
|Xabi Alonso||Bayern München||160.79||33.83||183.29|
|Philipp Lahm||Bayern München||160.50||31.92||175.86|
This is an average Goalimpact of 181. It even seems to make remotely sense in that they have all positions covered to actually play like this. Opponents should thank god that they never did.
So who are the best of the rest? Again just a selection without tactical considerations and injuries. Just one edit: We forced a goalkeeper in the team (there was no in the top 11) and chose one that is actually playing. Heinz Lindner has a slightly higher Goalimpact than Oliver Baumann, but is only reserve at Frankfurt after Timo Hildebrand.
|Luiz Gustavo||VfL Wolfsburg||183.18||28.17||187.59|
|Mats Hummels||Borussia Dortmund||182.31||26.75||183.99|
|Kevin Kampl||Bayer Leverkusen||176.99||25.00||178.59|
|Henrikh Mkhitaryan||Borussia Dortmund||175.62||26.67||177.09|
|Tony Jantschke||Bor. Mönchengladbach||173.26||25.50||174.06|
|Salomon Kalou||Hertha BSC||167.94||30.17||174.56|
|André Schürrle||VfL Wolfsburg||167.70||24.92||169.42|
|Nuri Şahin||Borussia Dortmund||166.00||27.08||168.28|
|Łukasz Piszczek||Borussia Dortmund||163.68||30.33||171.17|
|Gonzalo Castro||Borussia Dortmund||163.10||28.33||167.61|
|Oliver Baumann||1899 Hoffenheim||144.94||25.33||157.73|
The average of the best players of the rest of Bundesliga is only 169.5. Clearly lower than Bayern Munich's. But what is more striking: Only two players of the rest have a Goalimpact above of Bayern Munich's average, Luiz Gustavo and Mats Hummels. And only narrowly so.
Even if all other teams cooperate and let a best-of team play Bayern Munich, Pep Guardiola's team is expected to win. Even if we look only at the Goalimpact of the players, ignoring that other factors are likely to side with Munich, too. Yes, they dominate the league.
@Halbraumrandale made this nice pricture from the XI.