With the current performance of Bayern Leverkusen I have a great confidence that they will surely win the league because they have shown themselves worthy to become the Bundesliga league 1 champion, however Bayern Munich have been there only nightmare because Bayern Munich is looking for every opportunity to bring them down from the first position of the league but could not, do to how strong in performance Bayern Leverkusen is and also there consistency on this season league is something to write home about because they have actually proven to Bayern Munich that they have the performance that cannot be stop by them.
However Bayern Leverkusen is leading with 42 points while Bayern Munich is currently 38 points and however the Bayern Leverkusen upcoming matches is a very sure win match for them because there performance is far better than those clubs and at the same time making Bayern Munich chances of entering the first position very impossible for them.
They did provide a great sight so far, but that doesn't mean that they will win, it is not going to be easy for them to get that title, and it would not be simple for any team to fight against someone like Bayern.
But Bayern in any league and you will have some trouble, which I would assume would not be easy, you can put them at Premier league and they would still fight for the top, not saying they would get it, but they would be somewhere near the top, same goes for serie A, la liga, ligue 1 and everything else. I am not saying they would win them all, but they would be one of the best teams in all of them. So Bundesliga is hard to win when Bayern is there, we don't know what will happen but it will definitely be tough.