I know KC is tough but honestly Cincy scares me more as think the Cincy passing offense the scariest one in the league. I hate having to play both to get to a Super Bowl.
Considering Josh Allen lead Bills teams are 3-0 at home vs 0-3 on the road in NFL playoff games, I disagree with your thoughts. Home Field Advantage is important.
New Jersey as gives a chance to have bad weather and maybe more Bills fans can show up or the Giants/Daboll fans would be on our side. Toss in causes KC/Cincy fly longer.