Board Thread:Questions and Answers/@comment-5441128-20180108141224/@comment-27700324-20180131072335

Again, he can't go into films. His powers only allow him to access the DC multiverse. So to us worlds like Man of Steel's world or Smallville's world are fictional. However in this universe, it is another Earth. So he wouldn't know them like we do. It would just be another universe to him.