Teams like Leverkusen will usually experience difficulties when entering the second half of the season. Because teams with unpopular players usually have difficulty rotating their players to maintain game consistency. But what Leverkusen did was extraordinary. They are able to become an unbeatable team this season. Munich is still chasing points. I think the meeting of the two teams will determine who will be champion at the end of the season. Of course this will be a big pressure for Munich because they are the ones who are required to win.
In fact for now there are other factors not only about star players but teamwork and chemistry between players and coaches.
Even if a team has many star players but if there is no good teamwork then it will not have any impact on the club.
We take an example from PSG last season where a club with quite a lot of star players such as Messi, Neymar and Mbappe in the end they were only consistent in Ligue 1 alone not with other big competitions.
Likewise with Bayern and Dortmund where we know that the squad they have is actually much better than Leverkusen but with the lack of intertwined chemistry making their performance less solid when compared to Leverkusen so that even though sometimes star players contribute but when the teamwork of ordinary clubs is better it can be a difference in this case.