I don't know, what would you set the line at? I don't think I'd say it's way off. It was 10? and got knocked down to 9? early, so somebody likes Clev.
KC's last 3 home games they were favored by 5? over Buf, 3 over Den, 3? over Pitt. They did cover easily against Buff and Pitt. But I'm not so sure Clev is any worse than those two teams.
Gets pretty tough to keep on pasting everyone week after week too. Now expectations are that they'll kill every opponent.
I don't know, personally I don't like betting games much either way (fav or dog) once the spread hits double digits. The objective for the team isn't to cover, they just want the win. Screwy things can happen with big spreads.