The Supermen of Two Worlds: Two Men of Tomorrow

In Action Comics #484, the untold story of how the golden age Superman married his true love Lois Lane was finally told. Up until that point when this issue was published, Earth-Two's Lois had not appeared in comics for decades, hence it was unknown whether future editor-in-chief of the Daily Star, Clark Kent, had remained single as had his counterparts through the years.

Through this comparison chart, there were significant differences for the Men of Steel such as the comment "only other survivor of Krypton is his cousin Kara"  which Is true since the original Superman killed the three evil Kryptonians, and their  charter memberships into two teams of Justice in America.