If you don't see the difference, then your game is too slow or doesn't render enough frames (>= 100) per second.
99.999 percent of people will never notice or care.
...until one of them gets IP banned on a popular website/game, and brings down all others.
"The Avis WIZARD decides if you get to drive a car. Your head won't touch the pillow of a Sheraton unless their computer says it's okay." -- Arthur Miller