They are both in top form and both compete for 1st place.
Leipzig also have one of the best defense in Bundesliga, and scored most goals.
I expect to see a lot of goals in this match.
In fact, I think in contrast to Leipzig, I think that will be superior to Dortmund. I see from the previous matches that in 5 matches Leipzig are still unbeaten in the domestic league, while Dortmund only won 3 draws and lost 1 game before it.
But indeed both have a strong squad at UCL, both clubs are able to qualify for the next round.
Predictions for tomorrow Dortmund vs Leipzig 1-2.