Dortmund still has good strength this season but they are not able to maintain consistent performance, that is their problem this season but currently Dortmund have much higher motivation to finish in the top 4 so I think they still have a good chance big to win the match against Frankfurt especially since Dortmund will be playing at home.
The best team comes home with important trophy. Dortmund sell their winning chances the moment they started to sell their promising players, the available ones have become very tactical but not potential enough. They have tough fixture this weekend and it will become one of the tough match for them. Borrusia Dortmund won't fight for the Bundesliga title, rather they will keen on reaching the top four this season. Edin Terzic is capable of elevating the performance of his club, he just need more time to settled and bring more promising players.