The question is, say Russell takes $13 million/year, saving the team money to spend on keeping defensive players, Seattle keeps winning, adding another SB or two, surely Wilson does better in endorsements each year winning more Superbowls than an extra $4 million/year in his contract. He could get Manning/Brady type endorsements, becoming a major public face for the NFL, in fact, he could be THE face of the NFL over the next several years with continued, sustained success. Manning made $12 million in endorsements last year, Brady made $7 million. Tony Romo makes $18 million a year in salary but takes home barely anything in endorsements, because he NEVER wins.
What I'm happy about is while Sherman and Wilson will get their pay day, they are smart enough to realize their image and in turn, endorsement deals, benefit from being on a successful team. Maybe each one makes $3 million more in endorsement deals than they would in their contract solely on being with a successful team.