Seattle blew plenty of stuff on their own. They pretty much did what they wanted to on offense all night. Had they really just overwhelmed PITT, they would have overcome the officiating like PITT did with INDY. But can you imagine the outrage in PITT if the INDY game had gone the other way after the blown call on the interception? PITT fans everywhere would have been call the game rigged. And they would have been pretty much justified.
Overall, it was a poorly played game. And Seattle made plenty of mistakes on their own. That's for sure. But the refs became an issue in the game. And that spoils the entire affair. Take the refs out of the game and it will still go down as a bad game.