Ok, ok, I have to reply given that I live in Seattle and have followed the 'Hawks my whole life. A couple of things... I don't think they are as good as their 11-2 record indicates. They are a very good team, but they could easily be 8-5 or 9-4. I also don't think their defense is too great either. One thing their D can do, however, is get to the QB. They have a ton of sacks this year, something they didn't have last year. And that's with Grant Wistrom deciding to phone it in this year. They also have a couple of stud rookies at LB, Tatupu and Hill. I think their secondary is their biggest weakness. Trufant had a great rookie season, and since then he has been very average. Hamlin was arguably their best player in the secondary and he is out for the year.
Homefield will be HUGE for them. They are a great home team, and a lousy road team. I've always said to even have a CHANCE to get to the SB, they would need homefield throughout.
As for Holmgren being a great coach? I don't even think he's a GOOD coach. He's been living on borrowed time here. When he first got to Seattle he said he had a "five year plan," which meant he would get them to the SB in 5 years. He's past 5 years and he hasn't even gotten close. He also blamed the previous coaches and GMs when he first got here for the players that were not performing. He had a point, but up until this year not much had changed. And that was after he had drafted "his" guys. And this is off-topic, but he's also pretty poor at drafting players, often reaching when he doesn't have to.
One last thing I'll say about this team... they have proved me wrong this year. Everyone wants to talk about them ALMOST losing to the Giants, Cowboys, Niners, etc. Well this is the thing... in past years they WOULD have lost those games. This year they are finding ways to win them. It may not be impressive, and it may not be successful as far as handicapping goes, but they are unlike any Seahawks team I have ever seen in that respect. If they are going to lose in the playoffs it will have to be a team with a very good offense, because they will score on any defense in the NFL. Their offense is second only to the Colts.
Sorry for the novel guys, just my thoughts...