This is Superman w/gl ring whose lived for a million years and been to the end of the universe vs. the Mad Titan. Fight takes place on Ego the living planet.
Superman with a million years of experience after traveling the entire universe + sun amped for a thousand years with a GL ring.
I know he has nearly no feats, but we can extrapolate from Supes current sun amped showings (which are limited to several miuntes in the sun) + 1,000,000 years ranging the universe (which is a very big place) + the last GL ring (which is limited only by it's user's willpower; it's also been stated that Supes has the strongest will in the DCU) I also got the impression from Morrison's run that Supe-Prime might have access to all of his heirs abilities, although I don't think that's stated on panel.
Devil's advocate.
yeah...but with thanos having complete control of time, supes' time in the sun (which was NOT 1,000,000 years BTW...read DC 1 million again) would be instantly reversed, leaving him powerless.
reality could be warped so badly the lantern ring would be as useless as a plastic trinket.
space could be bent and shaped to thanos' will, reflecting any attack he could think of back on him a thousandfold.
seriously, the IG is pretty much invincible when in the hands of a skilled user. There's no way for supes to win this, lantern ring or no. No matter how strong he is, the IG guarantees the user to be more powerful.
What about my assertion that Superman Prime had access to 5-d magic? Was that just my impression or is it a shared view? Would it make a difference against the IG?
Space Mummy, notice I said "my impression" and am not presenting it as fact.
prime had long since disconnected himself from earth, by the time the dynasty was imp-graded®. though we can express our opinions on what we think happened, the fact still remains that there is no evidence that prime received said upgrade upon his return.