The Europa League clearly has differences with the domestic league, but we can assess a team's performance there.
In Europa League, which uses a knockout system, anything can happen and even luck will be quite influential here.
There's nothing wrong with predicting Liverpool and Roma's final, because both teams have good quality, but it's not easy and I really don't think that the course or what happens in the Europa League will be in line with what many people predict.
In the quarterfinals of the Europa League of course everything can happen, but still their influence and performance in the domestic league is our reference to predict which team will advance to the next round, although luck is needed by a team but the performance and quality of the team are the main factors for them to beat their opponents, I think we are all here favoring Leverkusen and Liverpool at the moment is it because they are currently at the top If Leverkusen were a mediocre team like last season that was near the relegation zone, would we all say if Leverkusen was a strong candidate to win the Europa League this season?
offcourse not..!
Realistically I don't think anyone would want to favour a bad team in the league to be favourites to win the Europa League at the moment, I think Leverkusen and Liverpool are the only two teams to reach the final, and even If those two teams meet in the semi-finals of course one of the two winners is a strong candidate to win the Europa League trophy this season.