Not really if they use the same logic that was used when the league gave KC the #1 seed and the bye. The league basically said the game never happened, so they went off winning percentage. KC gets the bye because they had one more win.
The Bills were already a game up on Cincy when the game was cancelled, so the Bills get homefield against every team but KC.
If the Bills did not have home field against Cincy, they would've gotten completely screwed in that deal.
Not only do they not get the bye, they then have to play Cincy on a neutral field when going into that game the Bills were the only team that controlled their own destiny.