The most performances will be with the Real Madrid team and the Dortmund team. Two of the best teams of the season, they worked hard and beat strong teams to enter the finals. But in this case, Real Madrid team has won the title the most because they know how to win the title, but Donmundo team has hardworking players and the defenders are the strongest. But I bet for the Real Madrid team, they have worked hard to win titles in the past.
Real Madrid are definitely the favorites and Real Madrid's chances are high. If you look closely at Dortmund's journey to the finals, you will see that this team was very lucky as they had easy opponents from the Super Sixteen to the semi-finals and managed to perform well against these easy opponents. Even if they make it to the semi-finals, the final match hurdle will never be easy for them as their opponent in the final match is Real Madrid. If they can overcome the challenge of the final match then I will definitely appreciate this team's performance and consider this team as a team that deserves to win the Champions League title.
It will only be on luck, if Dortmund should win this Champions league. When it comes to performance from the start of the season Dortmund are no where near Madrid, even Dortmund is aware and would need to step up their game, if their performance would be as that of how they faced PSG then their is no chances of winning Madrid. During the semi final against PSG they played tactically moderate and with that approach they can't win in the finals even Madrid plays a lot more defensive. Still very unimaginable how good Madrid is at converting even the slightest opportunity, Dortmund should play very defensive and make good use of opportunity if they really want to win the game.
PSG was not lucky enough playing Dortmund in both first and second leg, because assuming those balls that hit the bar of the goal post were goals, we will not be seeing Dortmund in the finals, but as luck is involved in all games, that was what brought Dortmund to the finals.
When it comes to luck, I think that Real Madrid are more lucky than Dortmund since football history, and when it comes to quality football, I believe that Real Madrid has it more than Dortmund, also when it comes to quality players, they have it all. This is why I don't think that there will be any magic that will make Dortmund win Real Madrid.