Never really thought about this, but right now I'm playing through the user made campaign Fallout and I'm in a mission where a squad leader is leading us on a nice jaunt across the map. Now when I'm commanding I walk most of the time with short bursts of running if in a danger zone. The AI of course moves a run across the whole map. Now I'm keeping up, but my screen is all wavy and I'm breathing hard like I should when we get into a contact.
This particular firefight was of a closer range around 100m and I'm trying my best to target the enemy, but of course my gun is all over the place to model the fatigue. Now my AI teammates seem to have no such problems as they quickly drop the enemy (playing with the excellent ASR AI mod as well). I have no issue with how quickly they dispatched the enemy as we found them flat foot in a clearing at close range, it's just as I struggled to get on target I found the AI quickly engaged targets and it got me to wonder about this.