"If my gun is unlikely to bypass armor, us a grenade instead"?
Don't be ridiculous, this AI is incapable of even remotely as smart behaviour, plus that'd be cheaty - how they're supposed to know what are your armor stats?
From what I've seen in the code, the main things that make the AI to throw gurnades in OXC are:
1. Clustered soldiers (so-called grenade magnets are literally grenade magnets)
2. Low morale (AI is more likely to use grenades when in despair)
From my combat observations, AI is both more and less likely to throw grenades than in the original:
1. On the one hand, in hundreds of battles I've fought and dozens of let's plays I've watched, I've yet to see a 100% confirmed, sure instance of AI attacking from beyond its direct LoS in OXCom; I'm pretty sure in original, the AI DID toss grenades from beyond its direct LoS. And it certainly did fire Blaster Bombs.
2. On the other hand, the AI in the original was much less prone to suicide bombings. Well, seems that OXCom goes with the spirit of our times