A lot of the issues come from the scheme playing corners outside. When you are constantly rotating safeties and linebackers like a hockey team you have issues with guys not being where they need to be, making a trailing cb look way worse then he really is. Granted they have not be spectacular and a lot of that is scheme, but they could do better
Besides why don't you pick on the obvious like when was the last time a DT had any kind of qb pressure. Can't we find at least one decent 3 tech someplace?