Bosa knows that this isn't the top of Madden 22 coins the line. Bosa should be in the upper 90s by the close of the year and Madden alters his ratings accordingly. In reality, it would not be a surprise that Bosa is rated as the second highest defensive line player in the game behind Aaron Donald.
The most important reason is Staley. Bosa has already been elite throughout his career. Staley has made a living off of making elite players perform even better. Staley has been a hit with Khalil Mack as well as Von Miller. Mack enjoyed a stellar year as an outside linebackers coach under Staley and hasn't played at the same level since.
Mack is clearly still an outstanding player, however the team hasn't been able to replicate his performance from the 2018 season. He had the most successful matchups in his career with Staley Mack, who was traded along with Vic Fangio to the Denver Broncos after the 2018 season.
Aaron Donald was already at top of the food chain by the time Staley came to the Los Angeles Rams for 2020. But take a look at his impact on Leonard Floyd. After the breakup with Staley in 2019, he took a step back in 2019 and then joined Staley's Rams in 2020. He had the best year of his career.
Staley can do things that edge rushers with other coaches can't accomplish. It is undisputed that Joey Bosa is one of the best edge rushers in the league, so with the right coaching the Defensive Player of the Year Award can be achieved. And with that, Bosa could see their hit rate rise, probably in the 97-98 range. In the present, Myles Garrett is a 98 while Mack is a 1996. Bosa might rank in the upper echelon and buy Mut 22 coins may even exceed both of them.