Betting on the underdog seems even more dubious nowadays. The two final matches (European League Final and FA Cup Final) have indeed changed our perception about who will be the favorite in the Champions League final match. Atalanta surprised everyone because they managed to beat Leverkusen, who had never lost before this season. In fact, Atalanta is the only team that has managed to beat Leverkusen this season. And in the FA Cup it surprised me even more. Because who would have thought that Manchester City would lose to Manchester United, who have been very inconsistent this season. The results of this match even made those of us who were initially sure about betting on Real Madrid have to think twice. Because it's possible that the same thing will happen in the Champions League. But I may have to reassure myself that Real Madrid will not lose in the Champions League Final. Because it has been a very long time since Real Madrid last lost in the Champions League Final.
Its difference atmosphere when comparison between UEFA Europe League final match and Champion League, Real Madrid had much experienced as the winner team when success qualifying to final round difference with Dortmund as underrate teams make us surprised after their achievement lead to final round. Actually the Europe League winner Atalanta is not weakness team because success eliminating top candidate winner teams Liverpool on quarter final round. This is the only club that has won UCL more than 10 times. It sounds non sense to think about that. I strongly believe in real madrid to take the trophy from dortmund soon.
In my opinion, Madrid is more favorite team will win UEFA Champion League trophy in this season because their composition players perform more better than Dortmund. Real Madrid have advantage with faster counter attack than Dortmund playing more individual exactly with Jadon Sancho and make Madrid has bigger chance for winning the final match.
https://www.uefa.com/uefachampionsleague/news/028d-1af2b2b6fa83-105b56c607b6-1000--champions-league-final-preview-dortmund-vs-real-madrid-wh/
The picture tells us everything. Public has been favoring real madrid to win the game against dortmund. I take that picture from UCL's site. It's based on public's opinion.