Dortmund and Bayern Munich will always compete with each other, although this is a distinct advantage for Dortmund compared to Bayern Munich, who are burdened with continuing to maintain consistency at the top of the standings. But it needs to be seen so far that Bayern Munich strength is slightly above Dortmund. As you said, if Bayern slips a little and makes a mistake or lets one match go to waste, then that's where Dortmund will replace his position.
In terms of quality, I'm still optimistic that Munich is superior. but indeed Munich has been a little off guard this season by starting the season not so well and finally now they are back on a good trend. despite having the same points at the moment, it does not mean that Dortmund will get the title this season. there are still quite a lot of games left, and that makes the competition even more interesting. whoever is more consistent, they will deserve to be on top till the end. even Union Berlin haven't completely lost their chance for a trophy either.