Let's star at begining. Batman has his real origin in the comics. The first Burton/Schumacher are based on that. They took what they think was a cool about Batman and made their movies.

The last two pictures by director Christopher Nolan are new takes on the characther. Nothing to do with the first 4 movies. And are more based in the source material

Batman can be interpreted in many ways.

I think they are both.Maybe Christpher Nolan wanted to make Batman's history less confusing.I also think that it would be rude on Batman's side that the first 4 movies were showing him very dumb.