I'm aware of that. I've watched games every Sunday for 35 years.
I saw a Seattle team that was physical, nearly to the point of dominance in the first half, but suffered three breakdowns that allowed Pittsburgh to execute big plays. Their advantages in the first half were 154-113 in yards, 8-6 in first downs and 16:48 of possession - when the game was quite close.
I saw a team that was hamstrung by huge penalties at the worst possible times, and I saw a team that by the quality of its play was at least as good as its opponent with the variable of officiating removed.
Pittsburgh was flagged twice for false start on its first drive, once for offensive pass interference in the second quarter and then not again for the entire game. Seattle took seven flags for seventy yards and virtually every one was a killer.
Bottom line - statistically, Seattle was a more than worthy opponent. That was my point.
I don't think anyone in their right mind would say the Steelers dominated the game. But even if Seattle got the calls, there was still no guarantee they would have won. But that having been said, the NFL must address the officiating.