I think, Benzema is among the talented strikers that made Real Madrid unbeatable in this season, because he always play to give the team the best that will make their fans happy at the end of the game. Since Benzema has recovered from injury to be part of their next match, I think it will be difficult for Ossasuna to defeat Real Madrid
Benzema recovery is very good news for Real Madrid but don't over rate the come back of Benzema on Real Madrid power. They can play well without Benzema and this time opponent is Ossasuna that are not strong enough to bring troubles to Real.
However, Real Madrid actually need Benzema for rest of this season.
Despite my belief that Atletico Madrid should win this match, I am not so sure due to the recent performance that they have shown lately. It is important to mention that they have recently lost to both Real Madrid and Bayer Leverkusen. Thus, I really doubt that Atletico Madrid will be able to win the game against Sevilla in the end.
Atletico Madrid are good team so they won't easily to lose all after only two defeats. Sevilla are at worse form than Atletico Madrid and I don't think the chance for Atletico Madrid to beat Sevilla becomes smaller after two loses.
On the other hand, Sevilla is in 15th place with only one win under their belt. As a result, I believe that they will not be able to win the game against Atletico Madrid due to this. However, I think the least surprising result is going to be a draw between both of these teams.
Sevilla can come back but not in this match but I know big clubs which are in troubles need big matches to boost their sentiment up again. Not always but we sometimes see under rated big clubs suddenly win big matches. However I don't have belief in Sevilla.