Face it: while Levelers may be extremely powerful, they are not capable of the kind of destruction wrought by an escaped W'rkncacnter.
W'rkncacnters can cause chaos on a galaxial, potentially universal scale. Levelers raise the dead and bring darkness to the lands of the Myth world, but that's not really such a big deal -- so do Republican presidents. You aren't suggesting George W. Bush is capable of causing tears in the fabric of space-time, are you?
Back on topic, I believe others have posited an interesting hypothesis that the Great Devoid contains a W'rkncacnter trapped by the gravity of a singularity. I just can't find those posts for some reason.
-David