Certainly putting in defensively. Restricting the Chooks to minimal metres after contact, or even pushing them back.
Some good footwork from RTS and Hastings got Roosters on the front foot that set. I just feel like that will ultimately be the difference.
Dogs may be bigger but Roosters won't be bullied out of the contest. It'll be tight, but they'll hold firm enough and make the most of their opportunities through their strike weapons.