Actually, the two Bundesliga representative clubs, Bayern Munich and Dortmund, have different strengths. Bayern Munich is clearly above Dortmund, but Dortmund is lucky because their opponent is PSG, while Bayern Munich has to face Real Madrid in the semifinals, so they have a different level when competing with their opponents on the field and Bayern Munich unable to keep up with Real Madrid's game, now he has been eliminated in this semifinal and Real Madrid managed to beat him.
Dortmund plays with full strength in the Champions League, which is different from what he showed in the Bundesliga where he had difficulty reaching the top level, perhaps because competition in the Bundesliga is not possible because Leverkusen continues to be consistent, therefore Dortmund is more focused on the Champions League so that they can reach the top level now Dortmund has reached the final and will face the King of Europe, namely Real Madrid and Dortmund also has the opportunity to win the Champions League trophy this season if he is able to beat Real Madrid, the Champions League final this time will be held in England and will be a very interesting final to play watch, last season Real Madrid failed to reach the final, this time he is back to conquer the Champions League again.
Bayern Munich and Dortmund are clearly two clubs with varying strengths, with Bayern Munich on top amongst them. Bayern Munich competed against Real Madrid and was unfortunately eliminated in the just concluded semi finals clash. Though blame their coach for the wrong choice of substitutions
On the other hand, Dortmund was fortunate enough to be playing against PSG and although their level of play is top notch in the Champions League, it is not compared to this Bundesliga season because of the disparaging level of competition. With Dortmund making it to the finals, they have to win against Real Madrid in order to get the trophy.
This season's UCL final game will be interesting to watch as Real Madrid wasn't able to get to the finals last season, but with them able to get to the finals, their effort will be doubled, if not tripled to ensure they emerge with the trophy. Plus their all time performances so far in the competition speaks that they're set to lift the European trophy again. They've got the caliber of team needed and they know how best to get their desired result too.