> Actually, I think motion blur comes from LCD/LED pixels not being able to turn > completely off fast enough. There is that extra glow left over from turning the pixel > off.
That's true, but the strobed backlight mitigates this by turning off the backlight during that blur period, when the monitor has received the signal to turn that pixel off, and the monitor has done so, but the LCD pixel is still fading. (you don't see that fade-out anymore, because it's not backlit during that period, and accordingly there's much less blur.)