He already takes more responsibility than Cesc, playing in the deeper Xavi position, seeing more of the ball, passing the ball with much higher accuracy than anyone else (Cesc today 82 % out of 74 passes, Thiago 92 % out of 92 passes). And it's only his first full season in the first division as a 20 year old. Just because he doesn't play a killer chip ball in the 10th and another in the 83th minute while being invisible inbetween doesn't mean he's average. His defensive capabilities should also be highlighted. If he scored that chance today, it was as complete a performance as you could get from a 20 year old central midfielder. People who criticize him now will look like retards in around 3 - 4 years time.