I am on record for being loathe to take what creators say into account on how to interpret what happens in comics. I don't think what they say is canon. I think they often say whatever their audience wants to hear. Sometimes they even change their mind about what their initial intentions were when writing the comic. That said, I think what writers or editors say can be admissible, when a comic is vague on what happened and what they say clarifies the comic and makes sense.If anyone out there reading this thread thinks a case has not been made for either side based on all the canonic scans and evidence, below is Dan Jurgens' take on Darkseid's, Doomsday's, and Superman's relative power levels. It's an interview done for this very board. Jurgens is one of the most prominent Superman writers ever. Jurgens affirms that without prep and strategy, Darkseid would lose to Doomsday every time. He affirms that Superman and Doomsday are roughly equivalent in terms of power, that both Superman and Doomsday can survive Darkseid's omegas, that Darkseid is "far less powerful than Superman," and that "in terms of sheer power, it's clear that Superman and Doomsday are both above Darkseid." Take that for what you think it's worth.