Barcelona seems quite lucky because they face Benfica. Even though Benfica is also a strong team and cannot be underestimated, I believe Barcelona can win this match.
Benfica is not a team to be underrated, as you said; they are also not a weak opponent against Barcelona, as you can see. But I still give Barcelona the favorite in winning this match. I think they are still better than them at this point. I'm also expecting Barcelona to win against Benfica.
So this will be a tough task for Real Madrid who continue to face strong teams. But yeah, it's still better than having to meet a strong team like Liverpool. It's just that this round of 16 also ensures that one team from La Liga will have to be eliminated. Namely between Real Madrid or Atletico Madrid. Meanwhile, the teams from the Premier League, namely Arsenal, Liverpool and Aston Villa, were quite lucky because they did not meet in the round of 16.
Real Madrid meeting Atletico Madrid is a difficult match to predict seriously because both teams are doing well, even though you said Atletico Madrid is quite better than Real Madrid. I can still say Real Madrid should not be underrated against Atlético Madrid.
This is round 16, and we already know any team that loses will be eliminated. That is why I'm saying all the teams will do everything possible to see that they win the match. At this point, I can't really say which team will win between Atlético Madrid and Real Madrid. This is a difficult one to predict. It's a tough stage of the competition.