He did a much better job than Lucas. Very rarely did they get down the centre like teams seem to always be able to do when Lucas and Gerrard are playing. Norwich resorted to crosses because they could not get down the middle, because Allen has much better positional sense and pushed them out wide. He even allowed Gerrard to get forward much more and attack, if we can keep that up, it won't be long till Gerard's shots go in.
Same thing happened against everton abit really. Cut the supply lines to the forwards and they have to resort to the flanks. Good point you've brought up there