Regardless of whatever strategy the coach uses, the most important thing is the final result, as you said, there is nothing embarrassing about defensive strategy.
However, destroying Leverkusen is not an easy thing because many teams have tried it throughout this season and none have succeeded.
Leverkusen is a strong team, we have to admit that and Roma is actually also a strong team when managed by De Rossi but in their last few matches in the domestic league we can see that their performance is a little bad so this is a benchmark for the first leg match they played Leverkusen.
I still favor Leverkusen, I think that's realistic because in terms of overall strength we can see from the start of the season that Leverkusen is much stronger and more consistent.
I agree that whatever strategy you use, Leverkusen is a team that will not be beaten that badly. I feel like the yare going to be doing quite well here as well, too many people are talking about the possibilities and I understand that because we have seen stuff that we thought wasn't possible, even the most recent Atalanta and Liverpool game is a great example of that, so people are saying what if Leverkusen loses like that as well? We thought Liverpool wouldn't, so why would it be different for Leverkusen, there is a possibility. But I believe that Liverpool isn't as good as Leverkusen when it comes to taking it seriously, I am not talking about talent here, I am just saying Leverkusen takes this more seriously than Liverpool ever did.
Leverkusen is now at a stage where they are more focused than ever on not being beaten. Even if they are defeated in the match, they continue to attack in extra time and somehow manage to win or draw. Why shouldn't something similar like this happen in the semi-finals of the European league? I think they will win against Rome today and not be defeated out of nothing.