In terms of strength, I think Bayern Munich and Leverkusen are quite equal now and the most decisive thing will be the consistency of both teams until the end of the season, especially since this season's journey is still very long so anything is still possible.
I think the competition in the Bundesliga this season will be much fiercer than last season and Bayern Munich and Leverkusen still have the same percentage to win the title, apart from Leverkusen who is currently 7 points behind Bayern Munich who is at the top of the standings.
The strength of the team is very dependent on the quality of the players and coaches and in this case both have their own advantages because as far as we have observed Bayern Munich is still the best in the Bundesliga even though in the DFB Pokal they lost to Leverkusen. I also see a difference between the two clubs this season and their strength in terms of players is superior to Bayern Munich compared to Leverkusen. The competition is still quite open because there are still many matches left to be played, but the consistency of both will be tested to what extent they are able to maintain it.
In my opinion, every season Bayern Munich is the best team in the Bundesliga, regardless of their failures, but in terms of players and other things, I think they are the best team. This is also proven by their success in a decade of defending the Bundesliga title, which was not easy at all. However, the ups and downs of performance for a team are very common, and that is also what Bayern Munich has to experience. Losing and winning are very natural things to happen. No matter how great a team is, if they have problems for one reason or another, they will eventually have to experience defeat.