Our D looked good against detroit for 2 reasons. We did use 3 down linemen most of the game. We also played with a lead and forced a running team into passing situations. Clark is still good at pressuring the QB when he isn't getting gashed for 10 yard runs because his only one of two down linemen. Gary was in absolute beast mode. Let me see them slow down KC before I get too excited.
As I have said many times, its symbiotic. When the offense keeps the D fresh the D looks better. When the D gets stops the offense plays with more confidence. When you complete passes it opens the run, and vice versa. On and on it goes.