I saw something on reddit that showed that the Ravens were 28th in strength of schedule (I think based on ELO) and the Bills were 3rd.
The Ravens had it pretty easy. BUT, they had some nice wins and finished out the year strong. You don't choose who you play.
I really could see anything happen in this game. I could see either team blowing the other out, I could see a tight, low scoring game, or I could see a shoot out.