Dortmund just doesn't consistently get full points in every match they play, I don't think they are completely bad this season in the Bundesliga. We can see how their journey has been in seven weeks, it is proven that even though it is less than satisfactory, Dortmund have not been defeated so far. In this case, Dortmund is the same as two other teams, namely Laverkusen and Bayern Munchen.
Maybe when compared to last season there is a slight difference in Dortmund performance, it's natural because they are released a star player like Jude Bellingham, it's still good that they haven't been defeated. I think when the transfer window opens, Dortmund will bring Sancho home from Man United but this is still speculation.
Comparison with Dortmund performance last season, success lead top position before loss the opportunity for winning domestic league tittle last match depend with inconsistency performance from rival team Bayern Munich. Have difference condition this season with Dortmund performance although not have many points difference on current standings position, Dortmund left two points from top standings team Bayern Leverkusen but they have draw 2 of 7 matches in domestic league and bad performance in Champion League.
I don't see with Dortmund have good chance in this season for domestic league tittle race with Leverkusen and Bayern Munich because their performance still inconsistency although until 7 matches in Bundesliga still unbeaten yet.