Barcelona's unbeaten streak continues, Xavi is happy, Barcelona is happy, the fans are happy and everyone is happy (especially the gamblers who bet for Barcelona). Of course Barcelona has higher chance of winning the La Liga title this season if it doesn't make mistakes in the rest of the season. But I think it's still possible for them to drop some points unexpectedly against weaker team or maybe against Real Madrid and derby match, so of course they have to try to avoid those mistakes for the rest of the season.
Barcelona's problem now is the lack of midfielders due to injuries to Pedri and Busquets. Xavi will have to try to adapt his players to play in different positions like he did when they beat Cadiz. Balde played as midfielder while Roberto played as right back, but the two switched positions during the match. Pedri is reportedly out until the end of March, that would put Barcelona in trouble.
Barcelona fans will certainly be happy their team is performing so well. Indeed Barcelona have been performing beyond expectations and now leading at the top of the league table ahead of Real Madrid. Barcelona look pumped up for the title race and as long as they remain consistent, it will be difficult for the other teams to overtake them.
One of the reasons other teams have difficulty catching Barcelona is because their performance in La Liga is very consistent. Barcelona has performed very well so far, since Xavi has been capitalized with several quality players who have been brought in since the start of the season, Barcelona's appearance has improved much more than before. Leading the standings with an 8 point advantage over Real Madrid who are in second place makes Barcelona's chances of winning a trophy even bigger.