but that doesn't mean it will be easy for them, anything is still possible.
I agree that AS Roma look to be stronger than Leverkusen with Jose Mourinho but their squad is damaged by many injuries that are not too good for them in semi finals with Leverkusen. With impacts from injuries, they have very bad recent matches in Serie A and they might not play better in Europa League with limited players. Dybala is very important for their attacking but in a latest match with Inter Milan, yesterday he was not ready and with 20 minutes in second half, he did not show that he got good fitness to play.
I think that Sevilla is no weaker anymore than Juventus. This is not because Juventus wouldn't be better on paper, I think they are still better on paper. But now is a situation where Sevilla exactly knows how to stay in the competition. It is similar to Real Madrid who played a below average La Liga season, yet they are among the top favorites for the Champions League because they have proven too often that they can show a different face if needed. I think Manchester City is a slight favorite, but still Real Madrid has as much of a chance to beat Manchester City as Sevilla has to beat Juventus.