In this case I do not think that Leverkusen's strength is the same as Bayern because however their conditions remain different in terms of strength and in terms of players, it's just that for management and performance this season Leverkusen is indeed very good and this is what makes them strong even with players who are in fact below Bayern.
Leverkusen is indeed a good club and its performance is quite convincing this season. but it is true what you say if Bayern is actually still above Leverkusen regarding the ability of its players. In the last match which ended in a draw, Bayern actually had a 2-1 lead. However, it was very unfortunate that at the end of injury time, they made a mistake and were very unlucky. So Leverkusen got the final kick which made it a goal. So it's just a matter of time, I'm sure that Bayern will soon take over the first position again. Moreover, they are really on fire at the moment, and Harry Kane has also made them stronger on the front line.