The only difference I see is that most of the bullets land slightly below the black thing in the wall.
Personally, I think it's just something what can help only if you have only slight amount of problems when using a certain weapon. I personally find it useful with Scarab+Silencer combination and Claw but it's not really useful for me outside of those weapons.
I use aim enhance, xpanded arsenal and man. Weapons: feline/scar and grendel. Maybe ae is best used with 3-5 bullet bursts or ae just takes 30% less "user input" on the right anolog when taming a weapon. I will do some testing on my own because this is intriguing.