I'd have to answer your question with the defense for this group of linebackers is as good as the defensive linemen allow them to be. Against Minnesota, the interior linebackers looked a little weak. That out there, Marcus Spears and Jason Hatcher were not paired up front.
If the two defensive ends on the field, become functional trash cans full of dirt, the linebacker play will elevate greatly. They will be more of a force against the run and actually be a valid source to blitz up the middle.