Uh, but it is in Crysis....that's where this went down.
Anyways, I don't know if you should scratch that pre-order or not. If you do, can you still get the game the day it is out should reviews be good? Like I said, I don't think it's very technically efficient, but I've been having fun with it after trying it out again. I never played much of Far Cry, but it's fucking rad attracting guards near walls you're hiding behind and then punching through their shitty tin shack and head. It's also great to run a security checkpoint in a hijacked trucked, roll out, shoot it and have it blow up - killing all the guards.
But yeah, the AI is pretty bad in the demo. Were you so inclined you can generally run into a little shanty shack town and just shoot everyone straight in the face while they either just stand in one spot and shoot at you or don't notice you shooting at them until you're about 3 feet away. They don't seem to run any tactics or anything, although it doesn't seem as bad if you run into guys in the jungle. Oh, and I seriously doubt the aliens/monsters/whatever have better AI.
I've read quite a few threads through gamefaqs and somethingawful.com and it seems this game is really polarizing (or at least the demo is). Some claim that the demo doesn't have multi-threading enabled and weaker AI because of lower difficulty, but who knows?