Dortmund's performance has declined in their last 5 matches, but if Dortmund didn't lose 1 player in this match due to a red card then I think the result would be different. Dortmund could still score 2 goals even though they played with 10 players, but they couldn't do much because Leipzig were too good to beat.
Basically Leipzig is not very stable either, but they are still better than Dortmund this season. Of course not only in the Bundesliga, but Leipzig also performed well in the Champions League by securing a ticket to the round of 16. But considering that the competition is still long, there is no certainty whether a team and their position in the standings will change.
I havnt seen the game Dortmund vs Leipzig and yes i guess without the red card the match maybe has ended in a different way from what i have readed.
To score 2 goals with only 10 players are very good , sad that they got the 3rd one in the 90 Min and score the other in the 92 Min.
Everytime Bayern Munich will struggle most of the other close teams are doing the same , damn.