BUF - Needed to win vs CIN and NE and get #1 seed no matter what. Loss to CIN and NE game would only impact 2 vs 3 seed.
CIN - Needed to beat BUF and BAL; And needed KC to lose for the #1 seed. Loss to BUF would have made the BAL game a play for the division game.
KC - Needed CIN or NE to beat Bills and win vs LAV.
I say Bills were impacted most with no benefit at all. KC benefits most as now a win with no help hands them the #1. CIN loses shot at #1 but also now the BAL game means much less and has no chance at ending up at the #6 seed.
Assuming KC wins:
Bills win they are most likely playing MIA. Slight chance of PIT, JAX or NE.
Bills lose they are most likely playing BAL. If BAL beats CIN then Bills play NE. MIA is out if Bills lose.
Best case if we don't want to play MIA - Bills win and Jets beat MIA. Bills play PIT and MIA is out.
Next best - Bills and CIN both lose and Bills play NE and MIA is out. Or CIN wins and we play BAL.