In the games I would use video settings that would make the minimum fps somewhere between 43 and 55 fps. It would take the video card longer than 1/75th of a second to create a frame, so it would be 2/75ths of a second when the monitor receives the image.
Vsynch caps your maximum FPS at the refresh rate. Vsynch and refresh rate of 60hz = 60fps max.
I don't know who told you that kind of garbage but if you don't believe me, go ahead and try it on your machine. Set your resolution and details to something lower than usual, enable vsynch and try different refresh rates. You'll see that it caps at 60, 75 or whatever max refresh rate you got.
I am right, you are looking at average framerate. With VSync on, using a 60Hz, monitor the FPS will be limited to 60, 30, 20, 15, ect. Triple Buffering will allow the video card to store a frame and work on a new frame while it is waiting for the next refresh, which basically means you might have one out of three or more frames take 1/60th while the others take 2/60ths.