Here is the reason 2 players will make this defense better:
Clark simply makes Troy better, Troy knows Clark can tackle, wont be out of position and can cover. Clark knkws Troys tendencies and know where the holes will be whne Troy is being Troy. Having Mundy in either position kills our secondary as he has shown to be a subpar tackler, tends to over pursue, and is not the best in coverage. Troy and Clark are as good a tandem as you can get at safety, but they need to be out together. Troy and Clark together stuffed the Jets, the othe 2 games we were shredded.
Harrison demands a double team and still pushes the pocket over to Woodley. If you double team both Harrison and Woodley someone else will go free to pressure. Harrison and Woodley are a team, together they wreak havoc, seperately we get no pressure.
Two players hold the key to our def woes, not individually, but what they allow others to do in their presence.