Not really. Seattle's O-line hasn't been able to stay healthy in recent years, especially Okung and Unger. Last year, James Carpenter had to play himself into shape and McQuistan had to be played out-of-position when Okung went down. Also, until this year, they had to rely on Breno Giacomini (a headcase who racked up penalties) at RT. It's really not hard to understand the poor production from their O-line in the last three years.
Funny how you're all about stats when they fit your Newton agenda, but when you disagree with the numbers, then it's "watch the game got."