Well, both of my tech wins were "pure good" but my two cultural wins were split between chaotic good/chaotic evil and my one military victory was as chaotic good (odd game, that one, the Drengin were the only people I wasn't at war with, and I wasn't declaring any of the wars), so I guess when I'm chaotic, I'm unpredictable

. I'm finishing up my first game as pure evil, and I could win any way I wanted to. I'm in the tech lead (Overlords vs Rangers, yum!), my military is twice the size of everyone elses except for the Drengins (and they don't have anything better than dreadnoughts, and I haven't even seen many of those), and culturally I've already got well over half the map, though my % of total influence isn't that high.
Then again, I'm not a rusher even when I do play evil. I'm an oportunist, culturally exploiting my allies as well as my enemies (when I play evil, that is), and making sure that even my enemies do things that benefit me once in a while (like taking out a starbase on a resource I want, when the person on the resource is someone I don't want to personally go to war with, or being at war with another of my enemies).