There haven't really been that many good crosses for Carroll so far, it doesn't look like his game. Really the midfield is far too defensive, despite the fact that Adam, Gerrard & Henderson are all ostensibly attacking midfielders, for no apparent reason there is just no desire to really attack from any of them. Further, I wouldn't say the formation is too defensive either, it has contained Stoke perfectly, plus Skrtel and Coates have both been free to roam into Stoke's half- surprisingly to some effect as well - so it really is quite baffling how little Liverpool have been able to create.