As a Packer fan I gotta say I kinda like it when they're in this kind of position. Green Bay in recent years has not faired well in big games as a heavy favorite, but as a heavy dog they do tend to surprise. At the same time I haven't seen the Packers beat a hard-nosed, physical team in ages, and Seattle is easily the toughest one in the league so there's definitely a concern there.
But let's just say Seattle receives to start. It's wet, windy. Seattle coughs the ball up deep in their Own territory. Rodgers then throws an 18 yard completion Down to the two. Lacy scores two plays later. 7-0 Green Bay. Seattle receives. Maybe goes 3 and out. Packers get ball around midfield. Get down to the 15. Don't convert. FG. 10-0 Packers. Crowd's a little nervous. Now you have a whole different game than everyone expected and its midway through the first quarter.
I'm just sayin, this is a very possible scenario Where Seattle now has to score three unanswered touchdowns to cover. If Wilson is off a bit because of the early start, and Green Bay can get a couple lucky turnovers, I don't know maybe the Packers pull this off.