Nightmare versus Wonder woman
In one corner is the legendary creature created by the soul edge, a simple young german warrior by the name of sigfreid is overtaken by the power of the soul edge creating a murderous killer incredibly strong no morals and the worlds msot powerfull sword (Note this is complete soul edge, zweihander style )
In the other corner we have Princess Diana of themiscara with the powers of fligth super strengh and her lasso could she beat a demonic creature that has plagued her gods for centurys*
*technically i am right since hephestus is a greek god and diana is greek i think