From a consequential standpoint, with the work he’s done to stop action on climate change, kill socialised healthcare, undermine democracy, sow division and hate, and generally protect the interests of a handful of billionaires over the species, Murdoch might literally be worse than Hitler.
The blood on his hands from his campaign of climate denial alone is immeasurable. There’s not a punishment in existence that would be proportionate, but he’ll never face consequences.