I see Barcelona are at the top of the table with five wins in a row so what are they struggling with? they are now easy to always get a win in every game, Xavi only needs to prepare their team to face Real Madrid on 16 october this because this is an opponent that is not easy for Barcelona.
Real Madrid and Barcelona this season have almost the same strength. They are unbeaten in five games in La Liga. However, Madrid will certainly lose Thibaut Courtois as the main goalkeeper in El Clasico Oct 16, Week 9.
My initial analysis for this season's El Clasico, I support Barcelona even though they experienced a less than optimal result in the European Champions League.