During Seattle's final 10 games last season (including playoffs), they averaged 32.4 points a game on offense.
During Seattle's final 10 games last season (including playoffs), they averaged 14.6 points allowed per game on defense.
Who knows how Seattle does next season? It appears they will certainly have more talent, and should be an even better team. But lets just say that things remain the same and they continue that kind of production.
If Seattle posted 32.4 points a game on offense while allowing 14.6 points per game on defense over a 16 game schedule, they'd finish with a +285 point differential. The 2007 Patriots hold the record in this category, at +315. For Seattle to match that record, they'd only need to improve their differential by a little less than two points per game. And remember, this team added Harvin, Avril, Bennett, possibly more, and they still have their draft- and they did this while losing little of significance in free agency. Can Seattle challenge the 2007 Patriots' record in 2013? If they do, that means they are about to win a ridiculous number of games.
There was some burst in Seattle's 10 game sample- the 150 points over 3 weeks was a huge driving force in those numbers. But you look at next year's schedule, and we have more games to put on "blowout watch" than our team had in 2012. And obviously, if Seattle is pushing +300, they wouldn't just be having a great season- they could legitimately contend for a perfect season. It's not likely, but our team has a real shot at something that for most good teams is pure fantasy.