Board Thread:General Discussion/@comment-43505-20161008233233/@comment-18172179-20161010223138

BruceGrubb wrote:

Since 1945 and 1949 are in the Golden Age and the formal Golden Age Superman wasn't a Superboy when this must be a different Superman from either Earth-Two or Earth-One.

We've solved similar problems with Batman by assuming that any story during the Golden Age/Earth-Two era that features Earth-One elements are simply "early Earth-One stories". DC has never estblished a hard line between universes, which leaves material open for interpretation. And it's all fair game.

As for Earth-2B and Alternate Earth-Two.... splitting hairs.