SapientWolf
Trucker Sexologist
That's because vsync at 60hz adds a crap ton of input lag, which pointer controls are extremely sensitive to (and head tracking is even more sensitive). The visuals are actually less smooth.It may not always be visually obvious, but in 99% of 3D PC games, just walk around on 30-60FPS vs 80+, and you'll notice how much smoother it is.
Diablo 3 is a great example. Turn V-Sync on (with a 60Hz monitor), and just click to move for a minute or so. Then try 120FPS. You can easily notice how rigid it feels. But you have to put up awful screen tearing.
If you had a 120hz monitor you would get the best of both worlds. Lower input lag and butter smooth visuals.