Common football fans probably favor Real Madrid to win the match. People know well which team has better players and has incredible history in UCL final. That's why people call Real Madrid as the king of UCL. But this can't guarantee them to win UCL, Real Madrid must do a serious effort if they want to beat Dortmund. The status of King UCL and good records in previous finals won't bring real impacts in the field. It finally depends on how Real Madrid players can play with their best level.
It's understandable that neutral fans put Real Madrid as Favorite, they are an ambitious team whose have standard of winning trophies every season. Their mentality in Champions League is unmatched, they would always to win even though they were not favorite in some circumstance like when they beat Manchester City, and they always find the way to achieve it.
Yes, there is no doubt about their mentality, even at UCL that is the case. They like to make surprises at the end of the match and in extra time. Indeed, there have been a lot of rumors circulating so far regarding Real Madrid and UCL, as well as opponents Dortmund. And this makes the wait for the UCL final even more interesting and exciting. Not only that, there will definitely be massive betting which sometimes affects the outcome of the match. Ahh, forget it.
But what is certain is that Real Madrid is very enthusiastic about their achievements in the UCL, not only this season but also all the time. And Real Madrid became the most title club gaining the UCL Trophy so far. So there is no doubt that Real Madrid's experience, strength and mentality will be that clear for tomorrow's final match. However, this would be very exciting if there would be fierce resistance from Dortmund later.