Bayern Munich's advantage is that they have good squad depth, but that doesn't guarantee that everything will go well until the end of the season. Leverkusen is more than that, they have a squad that is in its prime and also a young coach who has a modern vision in football, so as long as Leverkusen's strategy cannot be read by Bayern Munich or other teams, they will continue to move forward without losing. I don't doubt this considering that many big European teams are waiting for the arrival of Xabi Alonso and he is the coach who can revive Leverkusen since last season and this season they have far exceeded anyone's expectations. So, Bayern Munich should start to be wary of their chances of winning the title again this season because it could be stolen by Leverkusen.
Considering how the league is going and the performance of Bayern Leverkusen I don't think Bayern Munich has a chance on beating them on the league table because just like you observed Bayern Leverkusen has a very young and capable coach that knows what should be put in place for the club to perform more than the way they are now and besides it will take Bayern Munich to win two matches before they could be on the same level with Bayern Leverkusen and however the only challenge they will have now is that the remaining clubs on the league is very easy for them and Bayern Leverkusen to win so making the chances for Bayern Munich to lead the table very difficult for them because as they are wining other matches Bayern Leverkusen is also wining there match.