If you were to replace both characters with one another and swap them in their respective pictures used, I can see Prime barreling through the Avengers with some stupid wiseass remark about being ruined or that he's going to kill someone to death. Conversely, I don't see Classic Count drawing that much blood from Ion.
Prime, at less than full power, and at night, steamrolled through pretty much EVERY hero on DC earth simultaneously. Compared to that, Nefaria owning the Avengers isn't overly impressive, imo.
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"I am tired of Earth. These people.
I am tired of being caught in the tangle of their lives."