starkiller has much more combat skill, and is stronger in the force.
English
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But how many wars did starkiller win? None. How many op force sucking emperors did starkiller kill? None. How many times did starkiller become such a threat that the empire and republic at the time had to unite to defeat him and still almost failed? None.
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There wasn't a war that he had to attend to. No body knew about him because he works in the shadows with no companions. He does not need people to help him fight to kill one person, he killed Darth Vader, he killed countless Jedi Sith all by himself, he took a star destroyer out of the air with only the force, he destroyed army's of both Imperials, and wookies all by himself, and he did all of these with ease while being an apprentice.
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Revan singlehandedly defeated Mandalore, turned around the broken remains of the Republic to destroy the combined might of the Mandalorian clans, kept Emperor Vitiate from invading Republic space through his willpower, redirected a powerful Sith Lord's lightning and used it to [i]vaporize[/i] said Sith Lord, and even singlehandedly defeated Darth Malak who was trained by Revan himself and was an extremely powerful duelist.