Sith happens
Scenario: The Galactic Empire has crushed the rebels, Luke has killed Vader, turned to the dark side and Darth Sideous wishes to expand into the Marvel and DC Universes. To do so he selects the two most powerful Force sensitives; Dr Doom and Adam Magus from the Marvelverse and General Zod and Sinestro from the DCU, that he can find.
Which two would most likely have the stronger connection to the dark side?