I think you're selling them way too short.
They're offense is nothing special, but that defense is tough. What exactly have the Pats done to impress you so much? They played and took advantage of an awful division and beat two very flawed 10-6 teams in the playoffs.
Big deal.
The Seahawks pretty much shut down the Packers passing game which is better than the one they have in New England, so don't expect New England to light up the scoreboard. Their defense is much better than the ones they've had in recent seasons so I expect Seattle to have trouble getting into the endzone as well, but this is going to be a close game and I think the Seahawks have an excellent chance to win.
I never said the Patriots were "so impressive."
But the Seahawks are pretty vulnerable and I have no respect for their offense.
The Patriots are nowhere near world beaters but they are smart and can beat you a variety of ways.
I wouldn't normally think they'd put up as many as 30 on Seattle but Super Bowls have a tendency to roll downhill sometimes. And truthfully 30 isn't even that much nowadays.
And everything you say to diminish what the patriots have done, is twice as true for Seattle. SF was mediocre this season, the Rams were a below .500 team, and Seattle beat a shell of an AZ that didn't have a QB left to win the division. Then Seattle beat a shitty Carolina team that didn't even deserve to be in the playoffs. And then Seattle was handed the conference by GB.