If the Sith could unify and the Dark Council threw it's Xenophobia to the side. The Republic would have no chance.
Pretty much. What is it the Sith Inquisitor can say? "The Empire's intolerance is one of it's greatest weaknesses, even as the Republic's unquestioning acceptance makes it bloated and inefficient". It rather aptly summed up my stance on the matter.
Not that I'd say the Republic is unquestionably
accepting, but still.