This game reminds me of Cesc in his first Clasico start when he scored a goal but was crappy for the most part,especially in the fiirst half giving the ball away on many occasions. I've said it before,he needs more time and space on the ball to make his passes and will make mistakes which give opportunity to quick counter-attacking sides like Madrid.
Iniesta should've played in the middle and not on the wings. It's allright for Iniesta to play on the wings to make room for Fabregas against the lesser sides but that shouldn't be the case against Madrid. , Iniesta and Messi were too far apart,we needed their quick 1-2's to break the Madrid defense.
Fabregas will make good things happen in a match but against a high-pressing team like Madrid which deny you time and space, he will make more than a few mistakes as well, I'm not in favour of him playing in the midfield against Madrid. He doesn't have the first touch and ability to pass in tight spaces like Iniesta and the other Barca midfield. He also has more difficulty in controlling the tempo of the game and the fact that Iniesta is pushed out wide means that Cesc shouldn't start in Clasico's IMO.