Tom Brady is an all-time great playing at QB on one of the most dynasties in history. He is also always classy and says the correct (albeit boring) things in interviews.
Sherman is a loud-mouthed asshole. I love him for it, but if you bash media personalities and conduct post-game interviews like you're in the WWE, you will be (fairly) criticized for it. That's why the media will treat Sherman and Brady differently.
As for Revis, the particular spat I'm referring to took place last year, when Revis was out with a torn ACL. But even if you compare them now, Revis has still had a better career. Sherman is great, no doubt, but he also has amazingly talented safeties while Revis's career (before the Bucs misused him) he was generally one-on-one against the other team's WR1 with no safety help. However, this year, I'd agree Sherman has been the best CB in the NFL.