SEA (-230) -4.5 (-115) O 45.5 (-110) NE (+190) +4.5 (-105) U 45.5 (-110) Vegas is a touch higher on Seattle than the sims. Despite 3 of the last 4 championships being decided by just 3 points, the average margin of victory in the Super Bowl has been 13.67 since 1967. If you feel good…...