I haven't read this whole thread but I can easily put it that no matter how much work you put into AI a computer controlled character will never match the skill of a real, live, breathing person that can be totally unpredictable, especially when backed into a corner. I played JA online near daily for years a while back and the game on the hardest settings could never match real people that were only about 1/4 as good as some of the best players I've played against in a 1v1, no force power (except jump) duel. It taught me that there is no such thing as difficult AI, the only time they can be a challenge is in mods like Survival Mod 2 where you're fighting 5+ npc's using the reborn boss class with 5x or more health. If you've never played in a serious online duel you should try it out, a bit of advice though that new players tend to do, don't use those "kata" attacks, you'll die within the first 5 seconds.