I don't agree at all, I thought in general they did quite well. They both had 55 successful passes or more and Toure did play the ball forward quite a lot - see
here - and I thought Silva did quite well himself(43 successful passes all round the pitch) but they just lacked width - or quality in wide areas - and the only threat they had was when Toure or Silva played intricate passes in very tight spaces. The 3 crosses Silva attempted from the left all failed, and that should tell you a lot about where he should be played.
Well that, and how poor City were in getting numbers in the box - which was a problem that Silva needs to take the blame for - because a lot of the time the only player in the box was SWP, not even Tevez frequently, so their midfield play was good but their play in the attacking third really wasn't.