Based on how the Eradicator screen was blocked on the cover, the line about the revived Superman’s eyes possibly still being sensitive, and not actually seeing them together, I think readers were meant to think they were one and the same. But it’s handled a bit clumsily.

100%. They were trying to create a mystery as to whether it could be him or Cyborg and that was one of the things they did to set the red herring.