Darth Vader
As the Emperor's right hand, Vader commands effectively unlimited Imperial resources. Star Destroyers, legions of Stormtroopers, and intelligence networks spanning thousands of star systems respond to his orders. He operates a personal flagship, the Executor-class Super Star Destroyer, crewed by tens of thousands.
Beyond military assets, Vader accesses Imperial surveillance, manufacturing, and scientific capabilities that dwarf anything available on a single planet. He can bombard cities from orbit, deploy biological weapons, or simply command sufficient troops to overwhelm any terrestrial defence through sheer numerical superiority. His resources represent civilisation-scale military capacity.
The Joker
The Joker's resources fluctuate wildly based on his current schemes. At various times he has commanded significant criminal networks, accumulated millions through robbery, and accessed advanced technology through theft or black market acquisition. His chemical expertise allows creation of Joker Venom and other compounds.
However, these resources remain fundamentally street-level. He lacks standing armies, sustained funding, or institutional support. Each scheme requires rebuilding resource bases from scratch after inevitable defeat. The Joker operates effectively as a lone actor with temporary affiliations, occasionally controlling Arkham's inmates or corrupted officials but never commanding persistent organisational power comparable to galactic imperial authority.