Both are equally evil Both are equally good Think of yin yang, you can't have dark without light, you can't have light without dark. Both have the same ultimate motive but different means Think of it like this both have a dirty coin, both try to clean it, the sith try to remove the grime through force (scraping, scratching etc (the real kind ie. Brute force) the Jedi try to cleanse it (soft cleaners, blow dry etc)