De Jong will provide better marking. But still, Nocerino is average, Montolivo is soft, slow and overrated, and Boateng would be a very good CM but not as good as an AM. And they have no dept or good strikers (I don't like Robinho, Pato doesn't exist).
Abate is just an average/OK RB, they don't have a LB, I think Abbiati is shitty. Actually I think they can have a decent defense with Mexes and Acerbi/Zapata.
Generally speaking, their team just sucks real hard.