Having played and enjoyed Far Cry 3 immensely, I can confirm that the Crysis 3 AI is terrible!
If I uncloak while staring at the back of a guard, he will see me from the back of his head and turn around. If I uncloak while walking behind a wall with a guard on the other side, the fact that I uncloaked makes him go "do you hear that?" What, uncloaking makes my footsteps louder?
If I kill a guard stealthly (not using the stealth animation, but literally stealthy, as in silently and without anyone seeing), they just KNOW that he died because I didn't use the close-up animation.
And when they get alert they start shooting at the walls around them, far in the distance.
Crysis 3 and Assassin's Creed 3 are two triple AAA late 2012/early 2013 titles that should be condemned for using terrible and ancient AI. Hell I played the first Crysis on Xbox a few months back for the first time and was surprised by how well the AI behaved for a 2007 game, what happened to that?
Far Cry 3, it seems, will make it difficult to accept bad AI in shooters from now on.
What did you think of the C3 AI?
I am aware of the usual criticisms of military first person shooters, this thread is about AI