Bayern Munich is indeed the most productive club in the Bundesliga and when compared to other clubs the difference is certainly quite large. I think they only experienced a few obstacles when the competition with Leverkusen was heating up and we also know that this is a good season for Leverkusen to challenge Bayern Munich to win the title. The competition between the two is difficult to stop as long as they still win and they just have to wait for one of them to experience bad results to determine a bigger opportunity.
The competition in the bundesliga has taken a different shape so I doubt if Bayern Munich still retains that glory you accorded them this season, other smaller team are taking the competition to a different level in the bundesliga this season so Bayern will have to do better if they must be the best.
Leverkusen and Dortmund has aswell been productive well enough this season except for some set backs at some point which Dortmund experienced of which same was found with Bayern Munich some time ago in the league but then over all I think Bayern Munich and Bayern Leverkusen can be placed side by side and Leverkusen will have a few things with which they will be regarded as been ahead with.