I do lean towards Seattle in the 55% win-prob area because of team quality differential, but I see enough reasons to lay off:
-Rams QB is a big upgrade over last season
-Both lines revamped including new centers for both... could make for a chaotic game
-Seahawks DBfield: SS Kam Chancellor is holding out, FS Thomas has not played in preseason due to last year's shoulder injury; 2nd CB and slot CB out/gone TY
-Rams have played well in divisional games L3Y, 9-9 ATS and 7-10-1 SU despite being 5.9 point dogs on average
-Fisher not a very good coach, but he's pulled enough rabbits out of his hat to confound the Seahawks with a 4-2 ATS record