Dortmund have proven to us that they are one of the teams with good defense this season in the Champions League. Dortmund only conceded 4 goals in 6 group stage matches against Milan, PSG and Newcastle. So in my opinion Dortmund has proven that its defense is reliable, in fact Dortmund only conceded a total of 9 goals from the group stage to reaching the final.
Dortmund's problem may be their low goal productivity, while their defense is quite strong. Real Madrid is more productive than Dortmund, but Real Madrid has a weaker defense in terms of the number of goals conceded. This season's final is certainly very interesting because both teams have different games and strategies, but I don't expect the match to be boring and monotonous because of Real Madrid's dominance in building attacks.
Conceding 4 goals during matches in the Champions League this season can be considered as a team that has a good defense compared to Real Madrid which has conceded 7 goals.
We also shouldn't forget that Real Madrid excelled in scoring goals during this season's Champions League start. Madrid recorded 16 goals. Dortmund is weak when it comes to scoring goals.
Interesting and there will be surprises. Don't ask what the surprise is. Maybe the surprise is like the final of the competition next door.
Your statistics can be used as material for consideration in analyzing who is worthy of being included in the betting list.