Moreover, Barcelona's performance this season has been less stable compared to Atletico, but now everything has changed and the additional 3 points have put Barcelona in second place in the standings. I think Atletico must know that all teams are the same and must try to win and not just focus too much on their local rivals like Real Madrid. The additional 3 points are important to maintain stability and also create a safe position in top competition. 
I thought Atletico Madrid could make things difficult for Barcelona, but I was wrong. In fact I think like you, because they concede the ball too easily and it looks weak like in your picture. It seems Madrid have to learn a lot from Barcelona so they can make Atletico like a docile cat. It seems that Jao Felix became Barcelona's differentiating actor, with his anger he worked hard to make Simeone feel guilty about letting go.
Barcelona's play really impressed me; Athletico Madrid also had excellent chances, but their finishing were bad. I first assumed that Athletico Madrid would make the match difficult for Barcelona, but I was quite disappointed by their performance, especially their defensemen.
I think Barcelona's playing has really improved. Many fans blamed Xavi for not having a coaching strategy, but he is one of my top three favourite coaches this season because it is not easy to manage a team that does not have funds, and he is doing his best because he is currently second in the La Liga table and he still managed the team to the Champions League quarterfinals, which I'm hoping to see Barcelona in the Champions League final.
Barcelona was able to show that they are superior over Atletico, no matter where the match is played. This was why it was very easy for them to win the match with 3 goals on a clean sheet. Only if Bilbao and Girona drop points, that is when there can be hope for Atletico to finish on top four.