Everything can happen, especially in this stage of the season and the final stage of the game. Real Madrid needs to be careful with Dortmund because they are not a team to underestimate; they can make a surprise move. Although Real Madrid are stronger and they are doing better than Dortmund in all aspects, in this stage of the season we should not underestimate any team opponent. Since this is the final, you can see that Dortmund will do everything possible to see them win the title, but I think it will be very hard for them to achieve that because of Real Madrid's consistency, so let's see how they will do and who will win the league title, even though I consider Real Madrid to win.
Even though Real Madrid is superior in many aspects compared to Dortmund, Real Madrid cannot underestimate Dortmund. because with their consistency, Dortmund have been able to reach this point and this is enough to prove that they are worthy of facing Real Madrid and also giving their best performance which could possibly surprise Real Madrid in the next match. What I think is whether this season will be the same season for all teams that are known to be strong by losing this important match. Comparing Real Madrid and Dortmund is certainly not comparable, but anything can happen when it's on the pitch.
Maybe with Real Madrid themselves they won't be so worried or tense about the team they will face, because they are already a team that is used to big finals and they can hardly be beaten when they get to a point like this. But of course Dortmund will be very ambitious to win the trophy this season, so Real Madrid must be careful with Dortmund's performance which could be a surprise for them and football fans. I think Real Madrid will be able to win, but it's possible they could have difficulties in the next match.