Bayern Munich have advantage with 6 points left for awhile but behind the opponent teams match left seems not easy for securing three points every match, have focus at Champion League match make Bayern get difficult chance than Leverkusen only focus for domestic league match.
Winning these three matches is very difficult for Munich
Bayern Munich will play 8 matches in the Bundesliga. The Champions league is definitely Munich's main target. So there is a possibility of Munich losing points in some matches in the Bundesliga. Out of the 8 matches , Munich is likely to lose points against Dortmund, Mainz, Gladbach and Leipzig. However, Munich will get easy wins against teams like augsburg and Pauli.
It will be a bit difficult for Munich to win in 4 matches. However it is unlikely that munich will lose in all 4 matches. On the other hand, Leverkusen is 6 points behind. Leverkusen must win in the next 8 matches if they want to go to the top of the table. If Leverkusen wins in 8 matches, there may be a small possibility of Leverkusen taking the top spot of the table. However , if Munich's performance is consistent, this will not be possible for Leverkusen.