He is talking about the normal versions. Silver age superman was never given a limit to his strength he also had the wishing ability where he can get new powers on a whim with no limits stated either. He might not be the strongest in your opinion but in mine and the MC's, he is. Thank you for comment as well, means a lot.
The Superman of the Silver Age is the Silver Superman known to most netizens, and the Silver Superman is also the strongest existence in the normal Superman version so far.
Anime & Comics · StoryMTL
Thanks for the feedback.
[Super Hearing]: No media required, hearing can cover half a planet
Marvel & DC: Silver Age Superman
Anime & Comics · StoryMTL