Dortmund are performing great in the ucl more than the league, but I don't think they will have the opportunity to defeat Barcelona in their next ucl competition because Barcelona are performers great in both the league and the champions league this season, and I just see that Dortmund are just trying in the ucl more than the Bundesliga title, but I think that is because they see they can't achieve the trophy anymore, so they focus more in the ucl and see if they can But anything may happen against Barcelona and Dortmund. I see that Barcelona has started losing form in the league because they are giving real madrid more opportunities to overtake them in the league this season, drawing and losing games with small clubs in te competition. Dortmund are  doing well in the ucl and they can probably give Barcelona a tough time before they can defeat them or draw game. Let us watch and see how the game will be ended and see who will be the favorite achieve the three point.