I'm not so sure that it's because Quenneville is a mediocre coach, he's a good coach, but he's doing what any coach would do...trying to free up guys. The problem is, EVERY Red Wing forward (aside for that lovable Brunner) plays good defense. He's mixing and matching trying to find open ice for these guys but the only way he's going to get any of his top line guys free is to try and get them out there against our third line and that opens up a world of hurt the other way when Pav or Hank's line is out against your third line guys.
In an interview earlier this week Quincey was talking about how Bab's has really preached "swarming" on defense, and not playing man on man. Right now Chicago has no answer for it and Quenneville is searching in vein for open ice.