... fight for DECADES with no food, no water, no sleep, with every punch capable of shattering buildings for miles in every direction. Let's take things a step further suppose Doomsday met THE MAESTRO an incarnation of the Hulk who might even be more powerful then World Breaker. Two relentless MONSTERS each side beating the shit out of each other hours become days, days become weeks, weeks become months and finally the one year anniversary. Maestro has now spent ONE WHOLE YEAR with no food or water, let alone sleep mean while Doomsday has been evolving, getting STRONGER, and healing wounds. Doomsday may even be leaching Gamma radiation from Maestro making him weaker and weaker as the fight continued. We know Doomsday has that capacity since he crossed paths with a Green Lantern named Zharan Pel. Not only did Doomsday keep absorbing the energy emitted from Zharan Pel's power ring but Zharan Pel's power ring abandoned him in favor of Doomsday's own overwhelming willpower. Hundreds of Green Lanterns that were sent to stop him were slaughtered Doomsday continued to Oa, where a single Guardian sacrificed himself in battle to defeat him. Doomsday in Hunter/Prey came closer then any other being in the history of DC comics at the time TO KILLING DARKSEID (Superman with a MOTHER BOX saved Darkseid's life). Doomsday took a full hit from Darkseid's Omega Beams as Doomsday crawled out of the crater generated by the Omega beams's impact he relentlessly marched forward now immune to Darkseid's most powerful attack DOOMSDAY STARTS LAUGHING. In the Nu52 Doomsday's very blood contains spores programed to rewrite DNA so that when inhaled that person becomes a brand new incarnation of Doomsday. See everything in the vicinity of Doomsday DIES and Superman was the only being capable of withstanding the aura generated by the creature.