Nobody has provided evidence.
Just because someone says so does not mean it is proven.
Plus, it isn't quantified, all he said was "good accuracy" and "I would say 8/10 shots could have hit a person standing still".
Ah but theres the rub, I use it for woodland (veg loops now applied).
Oh and about that effect, all you need is to do the base layer(s) in one colour, lay some scrim net over the top and spray in a different tone/colour.