I think the ”under stress” part is the huge unknown variable.
Additionally, my practice with my CCW has always been at closer distances. I had never really contemplated having to take a 40 yard shot, let alone hitting 8 out of 10 at that distance.
Life would be so much easier if I could CCW an AR pistol with a red dot.
Pffftttt...
...some of us couldn't see the red dot at 40 yards.