Definitely not. Brubaker is purely fictional. The story and its elements were made up to entertain and engage the audience, not drawn from real-life events.
Well, the 'brubaker true story' might be about a particular Brubaker who had a unique experience. Maybe it's a story of struggle and triumph. For example, if Brubaker was an artist, it could be about how he overcame difficulties in the art world to gain recognition. Or if he was an athlete, it could be about his journey to compete at a high level. But again, without more details, it's just speculation.
The best Ed Brubaker story for me is 'Gotham Central'. It was a refreshing take on the Batman world. Instead of focusing on the caped crusader all the time, it was about the police officers who had to deal with the aftermath of Batman's battles and also handle their own cases. 'Sleeper' is another excellent one. It has a great concept of an undercover agent in a world of super - villains. The moral and ethical dilemmas the character faces are really interesting. Also, 'Catwoman: When in Rome' is a great story. It gives more depth to Catwoman's character and her backstory, especially her time in Rome.
'Incognito' is a top pick. It's about a super - villain who tries to start a new life but gets dragged back into the criminal underworld. The concept is fresh and Ed Brubaker's writing really brings out the best in this unique superhero - noir hybrid story.
In 'Incognito', the main character is Zack Overkill. He's a former super - villain trying to live a normal life but is constantly pulled back into the world of crime and superheroes. He has to deal with his own inner demons as well as external threats.