Been done already, numerous times. Entropy Aegis wins, it was never damaged, unlike the Destroyer, and while the Destroyer was made by an Skyfather the Entropy Aegis was made by and from the parts of an Abstract.
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Sig made by my mate, the one and only One_Angry_Scot
Judging by defeats, and what the Aegis was meant to do, and has done this is spite. Unless the Ceestials would be able to slag the armor like it did to the Destroyer.
I thought a sundipped Superman survived the energy of Entropy...TWICE. I'm pretty sure he did. One was when he was sporting the Blue costume when GL contained the blast and the other time was the sundipped Superman.
No he never did, while he was merged with Kismet she took him to a safe place outside time and space in order to save him from Imperiex Prime. The other time is no as well... Mabye you are thinking of when he and Doomsday was fighting together? Didn't happen there either.