Sheesh, I love Earl Thomas/ Kam Chancellor, and Richard Sherman, but for me? in order to win games, you have to consistently put up more points on the scoreboard than your opponents do.
You can have a stellar Defense (and we do), to get the ball away from the opponent, and keep putting it back in the hands of your Offense, BUT, that Offense still has to produce.
Therefor, I say it all comes down to Russell Wilson & Marshawn Lynch, AND, beings that the Quarterback isn't a part of this discussion?, then I believe it has to be Marshawn "The Beast" Lynch.
When tight games between the top tier Defenses, like the ones the Seahawks have had to play in the last few Years, Our Offense has been THE difference between winning and losing some of those hard fought games, by making some incredible plays down the stretch. ( games like last Seasons NFCCG against the high scoring Packers).