Like Bobby you are speculating way too much. The NFL penalized the Bills for not reporting Mario's hand injury. You are comparing reports based off of injury's you have very limited knowledge of, especially if they would break the NFL's rules. Suffice to say if the NFL thought the Mario thing fit the description for penalizing the Bills, it sounds like they likely looked into the Tyrod and Woods cases as well and dismissed them.
Meanwhile, the Seahawks didn't put Sherman on the report at all, all year.