When teams start taking away the outsides it will open up the middle more making it easier. I wouldn't worry too much, I trust our staff.
They also have Incognito, Pouncey and Martin with .25 sacks each. I could not find sacks allowed for backs or ends. So, I'd guess they attribute 1 of the 2 sacks allowed to 4 players equally and 1 to Long. Quite a bit different than PFF, who gives out sacks in whole increments only.