It's more than creating takeaways.
They are playing better as a whole unit. Yes they give up some big gains here and there, but they have also put more pressure on the quarterback.
Look at how some of the rookies have come along.
White & Milano are not having 2nd year slumps.
I know that Kyle is not playing every down, but he still is giving his best and he has been disruptive.
How about Lorax? He's quietly having a good season.