How highly do you rate Laurent Koscielny?

I see it is generally a consensus that he is the best or in the top 3 CB's in the league. Now I am not saying that is wrong, but although i think he's a good player I just think considering how flimsy Arsenal can be in big encounters.. surely if he was that great, he'd be the rock who can galvanize that side into being a more solid outfit or am i being harsh here.

Where does he compare against the likes of Ferdinand/Vidic/Carragher/Hyppia/Terry/Carvalho league of defenders. Is he unlucky he...

How highly do you rate Laurent Koscielny?