#1 Messi factor

And of course, how can we forget that Lionel Messi plays for Barcelona? The quality of the Argentine is such that he has, in many games, carried the team by his own self. He might not have had a great Clasico outing against the Blancos in the Super Cup, but he is one of those guys that can change the outcome of a game in a mere moment.
When the 5-time Ballon d’Or winner is on song, there is no stopping him. Be it scoring divine goals of making wonderful assists, he can do anything you would want from an attacking player. He might not have the brilliance of Neymar to count on now, but he is Messi – someone who gets tougher when the going gets tough.
As long as the number 10 is at the club. Barcelona have a chance at winning the league.