If by the end of the season the number of points between the two teams is the same, we have to look at the differences in other sectors and if the number of games between Bayern Munich and Bayer Leverkusen is the same along with the points. So the one who will be at the top is Bayern Munich, because the number of Goals Difference is still more than Bayern Munich. Just because Bayern Munich's number of matches is still fewer than Bayer Leverkusen, that's why the top position still belongs to Leverkusen at the moment.
Bayern Munich may be at a better advantage if by the end of the season both Leverkusen and Bayern Munich finish with same points, this is because Bayern Munich seem to have more goals in most of their matches, it's no news how Bayern Munich has been raining goals especially when they meet with team who seem weaker than them.
Leverkusen always happens to win most of their matches except for two draws they have had so far but then their winning margin is not always as big as that of Bayern Munich when they win, Leverkusen wins with just about 2-4 goals but Bayern Munich have got cases where they have won by seven goals and more so I think they will be at advantage more but then if Leverkusen continue to stay consistent with their winning, they may finish ahead of Bayern Munich by the end of the league, although the difference may be slim.