I've been listening to talk radio for the past two days, plus watching ESPN. Most commentators are somewhere in between Colin Cowherd (he's not recognizing the Steelers as champs) and Peter King from SI.com (he had a problem with only one call, the 'low block' call against Hasslebeck after he threw the INT). Most seem to agree that the officiating was poor, and that there were a couple of calls that were missed (Jeremy Stevens appeared to fumble after a reception; the officials should reviewed the out-of-bounds call on Jackson's reception near the goal-line pylon), but most aren't going so far as to say that the refs won the game for the Steelers or lost it for the Seahawks.
Here's something I wrote on January 17th at my blog: (http://www.blogtext.org/rocketman/article/3446.html) "It seems to me that the playoffs each year are marred by some gaffe(s) on the part of the refs. The NFL had better start getting very concerned about it." I wrote that after the Divisional Playoff round, when Pittsburgh was the victim of that very poor call against Indy, the Polomalu INT that was ruled an incompletion. That weekend was marred by several instances of poor officiating.
I won't go as far to say that games are "fixed", but everybody likes a happy ending, and the Super Bowl went according to script. It does make me wonder.