Part of it is depth.
They have also been trending up 12, 9, 16, 17, 20, 27, 14, 34. They are trending back to the middle. Instead of the 15-17 ppg, they are trending back to the 20's.
It was noticeable how open the middle of that defensive Line was tonight. Also we see that this team can not generate pressure, that Lawson is a 5-8 sack/year guy, not a 10-12.