You forgot about the Giants faking injuries, a widely acknowledged fact around the NFL, during their 2011 run.
Goodell's justice:
Manning's Teams
Manning used HGH in order to return from injury, if not beyond that. Puppet investigation reveals evidence Manning received HGH at his home, league buries story.
Colts guilty of pumping in crowd noise in 2006/2007. Investigation completed within hours and buried.
Colts illegally turn up temperature in 2006 AFCCG. No investigation.
Bill Polian purposely changes pass defensive rules, changing the league forever, in order to get a competitive advantage for his team. No investigation.
Tony Dungy admits the Colts stole signals frequently during his tenure as head coach after comparing the Patriots success as "Barry Bonds" when it happened during the same point in time. Dungy acknowledges that both teams did the same thing, but there was a difference in "how they did it." No investigation.
Steelers
Dodged enormous scandal when their doctor admitted to giving the team illegal substances in the 2000s. No investigation or penalty.
Won Super Bowl XL as the referee later admitted to blowing the game with multiple terrible, biased calls. No investigation.
Mike Tomlin attempted to trip a player running down the sidelines on a live play. 100K fine (1/10 of "DeflateGate"). No draft picks foreited. No team fine.
Emmanuel Sanders fined (less than most fines for accidental hits) for faking injury. 15K fine (less than the fine for an accidental hit to the head.)
Antonio Brown illegally released Facebook Live video of locker room speech. (10K fine (less than a fine for virtually anything else.)
James Harrison implicated for illegal HGH use. Puppet investigation buries story.
Ravens
Ray Lewis widely suspected of using deer antler spray, a banned substance, during 2012 Super Bowl run. No investigation.
Terrell Suggs perpetrates repeated domestic violence against women, with clear and overwhelming evidence. No investigation.
Ray Rice knocks out fiance in elevator, captured on video. After a blatant attempt to sweep it under the rug, Roger Goodell claims he never saw the video and was lied to, while a federal judge tells him he is lying.
Jets
Jets blatantly tamper with Darrele Revis, violating the specific wording of the rule, and then are later revealed to have gone way beyond that, contacting him illegally while Revis was still a member of the Patriots. The Jets then sign Revis hours into free agency. Jets fined 100K. No forfeiture of draft picks. Investigation is not re-opened in light of later reports that their actions went beyond Johnson's words, which would also be punishable by lack of honesty. League strips Chiefs of draft picks later in the same offseason for tampering widely regarded as accepted by an unwritten rule.
Sheldon Richardson drives 143 MPH with marijuana, a loaded gun, and a child in the vehicle. Three league insiders predict he will never play another down in the NFL. Richardson suspended one game. Same penalty as Kevin Faulk in 2008, who was not speeding, did not have a loaded gun, and did not have a minor in the car. Faulk was also a first-time offender and during a time when the personal conduct penalties were much lighter.
Sal Alosi trips opposing player during live play. Alosi suspended for season. No fine or loss of draft picks for team.
Jay Feely caught tampering with K-balls before game. NFL punishes equipment manager but buries any responsibility from Feely or the team. Feely later shows up in Brady's trial to testify about the disparity in how their situations were handled.
Jets illegally film Patriots in 2006, one season before "Spygate." League does not investigate further.
Dolphins
Dolphins extract audio from television broadcast to decode Patriots audibles and playcalls, resulting in a shutout. League makes no changes to protocol despite major competitive disadvantage to teams who play in primetime games with extended audio tracks. John Clayton: "That's football."