Matt Cassel, Tyrod Taylor, and EJ Manuel are still in a QB battle for Bills. They are in disarray.

Bills have been very cautious with WR Sammy Watkins and he is doubtful. Robert Woods who had 65 catches is also likely out. Percy Harvin is very doubtful for Bills.
All week long, Steelers coach Mike Tomlin has been in regular season mode in preparation.

With the start of the regular season mere weeks away, Tomlin wanted this week to simulate an actual game week, with position and team meetings and practices scheduled accordingly. The week also included Buffalo film review and detailed game plans for the opponent, something that was missing from the Steelers initial preseason games. Of course this is not uncommon, compare that to the Bills who do not even have a starting QB.