In the end I have to think of something different between the domestic league and the Europa League semi-finals of each of the 4 remaining teams. Roma are favorites because of their big names, but their achievements are also not very convincing in Europe. While Leverkusen have done very well in the Bundesliga, I'm not entirely sure they will have the same form in the semi-finals.
The semifinal between Leverkusen and Roma was indeed very balanced in terms of team quality, but it seems Leverkusen's ambition to qualify for the final was difficult for Mourinho to prevent. I think this is a match full of prestige and rivalry, so it should be a match that is not boring to look forward to.
Obviously, there is a difference between the Domestic League and the other Leagues. I mean those who play in the domestic league, must perform consistently to achieve the results they are targeting. while in the Europa League, the two teams only met home and away matches. that means, aside from player factors, performance, strategy, and all that, there will always be a bit of luck involved. the question is, which team will be lucky in this match, regardless of the statistics they have.
This reminds me of Barcelona, Arsenal, United, these three clubs, who are predicted to be finalists in this competition. it's a shame the luck factor wasn't on their side, even though they have quality players if we compare it to other teams. well, at this time we are only talking based on existing data and statistics. therefore, I prefer Leverkusen, regardless of the big name that AS Roma has. after all, we will know the result when this battle is held. However, I agree with what you said, that these two teams are very even. so, it's a shame if this fight doesn't present an exciting and interesting fight. and I hope, as you say. Hopefully, this match will not be a boring match. Uniquely, this match brought together Jose Mourinho and Xabi Alonso.