I saw the All 22 and it is very hard for any LB to move sideline to sideline when you have multiple guys coming your way.
I think the biggest problem is the DTs are not doing their part. Take a look at the game again if you can and watch the KC Gards and Center, they often combo blocked our DTs for a second and moved them well, then one of them was quick to find someone on our sencond level (Tremain or Klein). Even if they were colsing on their gap, the Gards often were quicker cause they didn´t need to help too much in the combo blocks.