Hard to distinguish the two honestly.. sometimes players just don't fit a system/team. I am still reserving judgment - some of the praise is OTT as much as some of the criticism. He definitely struggled more once Chelsea decide to press more and his wild clearance and pathetic header attempt lead to Chelsea's goal.
Having said all that, he has progressed a LOT over the last 20 or so games in my estimation and looks like could be a very, very useful player for us. We are still missing a proper partner for him in the middle and i worry about this. El Neny worked his nuts off today and is a trier, but he is no Santi.