I think you guys are missing part of the equation. COACHING.
This is about BB studying film and coming up with a game plan for his guys to execute. He is always telling them to take away the favorite passing plays. Chad and Palmer have run this play before, and Chad just didn't get to the right spot but Asante did.
Not to take anything away from any of our players, but this is what they are coached to do. This is the thing that seperates us from them. COACHING.
Is Asante a solid CB? Sure. Would BB have coached another player to make this play and get in the way of an obvious passing pattern with safety help? You bet.
Take a good player and make him study the exact tendencies of another team, and set up the safety help, and let the player take it from there.
Not much happens by chance in a BB defense. That is why ex-players often want to get out of the confines of the system, make big money, and try to prove that it was all about them, not the system.