If Thanos has The Infinity Gauntlet, Darkseid has The Anti-Life Equation to cancel that out. The Infinity Gauntlet isn't exclusive to Thanos.
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Very true, but without those God-like doohickeys, in a straight up fight, no gauntlet, no equation, Darkseid most definitely beats Thanos' ass.
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Only in instances where Gauntlet/Equation are involved, but 9/10 times, any comic book writer that knows their history would have Darkseid win in a straight fight.