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Thus the easy victory. It was created to battle and win against the Celestials. That did not go very well. It would not make sense for Odin to create a champion who could not do what he failed at in the first place. However there is no way he would do so without failsafe included. Up until the Celestial reveal I think Odin could have beaten the Destroyer. After all half of Odin was shown as a universal threat. Then again he was once also smothered to death with a pillow.