Rice barely played last year and Harvin only played in 1 regular season game. Golden Tate was Seattle's top WR last year which says a lot about the lack of receiving options Seattle had to work with. Wilson also didn't really have a receiving threat at tight end as Zach Miller is a blocker at this point of his career.
Brady is a better QB than Wilson yeah, but if Brady were on Seattle last year he would have been on IR after week 2. Seattle's offensive line was that bad and their receivers had a really hard time getting separation.
I think Wilson's rating is deserved. Wilson pulled a bunch of wins out of his *** by keeping plays alive with his legs. They played a lot of top 10 and even top 5 defenses last year and Wilson still managed to keep his rating above 100.
To the comment where he can't carry a team, that's a load of bull. He completed 75% of his passes and had over 300 yards passing against Carolina, had 230 yards and 3 TD's at Arizona, and in maybe the biggest regular season game of the year had over 300 yards and 3 TD's against New Orleans. All three of those teams were top 5 defenses last year (or right around there).