Originally Posted by theMan-Bat
No, the so-called "actual DC canon" says the same. In the JLA by Grant Morrison for example, Batman is the smartest. He’s taken the League on by himself, and won. Plus, he is the chief strategist and problem solver.
"It's all just psychology and charisma with Batman. Everyone is wary of him because he's hard as nails, smarter than a bag full of whips and he knows all their flaws and weaknesses. There are just some people in the world that you don't f**k with and Batman is one of them." - Grant Morrison.
By the way, revealed in Countdown 40; Earth-31 within the DC Multiverse is officially the home of Batman, Superman and all the characters in All-Star Batman & Robin, Batman: The Dark Knight Returns and DK2. It's actual DC canon, too.
Every comic book published by DC comics is "Canon" within its own story.
The question is wether or not the events of any particular story has any bearing on other stories.
And as far as I know [I could be wrong] the only thing that was implied was that Earth 31 was the home of "The Dark Knight Returns" and "DK2" characters.
So far that has been no official connection
between Millers "All Star" universe and his "Dark Knight Returns" universe.[again as far as I know].