The race last season was one of a kind. The gap difference between them and other teams was extremely much but this season they have been less impressive. Perhaps because of injuries or some players they sold out. However, it isn't a bad season for them because they were able to go far in the Champions League until Bayern Munich decided to eliminated from the Champions League. This has not been their worst season so they still have next season to do better.
This season competition is the same as last season competition, where Leverkusen managed to lead the top of the standings perfectly and now it's Bayern Munich turn to take over the top of the standings again. So before the season ends we have already got the winner, a difference of 8 points is not an easy target for Leverkusen to pursue because Bayern Munich is really in a promising mode, especially after conquering Xabi Alonso troops in 2 matches without scoring a single goal against Bayern Munich in UCL.