How sure can you be? We can only call the favorite at this point but pointing out who wins is just speculation on our part. The points Barcelona uses in surpassing Atletico Madrid are considerably enough to limit the assurance that they will win the league. They lost the ability when they faced Barcelona and was unable to secure the winning points, the fall started from there, and a different scenario if Barcelona will be willing to release some points within the remaining games to put Atletico Madrid back in the race.
It is true that Atletico Madrid have failed to win their last two matches against Barcelona. That does not mean that they have performed badly. They drew in the semi-finals of the Copa del Rey with a great performance.
And in the last match they kept Barcelona under full pressure for most of the match. Although Barcelona later managed to win with a surprising performance towards the end, I think it would be foolish to expect such a performance in all matches. I am a Barcelona fan, but I can't take the spotlight off Atletico Madrid. Because Barcelona players really went through tough situations to achieve victory against Atletico Madrid.