With Barca with the championship finished, it is not a serious deal anymore, especially when there is a game in the Champions League. The 8 points difference from Atletico is 1000 even if it is doubled today.
As a simplistic thought, I say ... you have a critical match in the Champions League and you are welcoming an Atletico of your hand, what choices you have. Lao Lao to make X remain the difference, not to get tired and everything good or go to get them to finish the championship and see in Europe?
Atletico what will it go? Any monsters in Camp Nou to see no Simeon with the canyon ashore? Do you really want to become a sausage permanently?
But how many times have you seen such an honor this year? Do not you feel impressed? Does not it look like cheese? Why so high the ace when the prehistory shows unsightly and when the lies lie the difference between the two teams is great.
I have to choose a scenario and go with the risk of a tie.