this is what their saying
Analog, however, works differently. Analog means you can send multiple or variable inputs to the PC with a single button. This is very similar to pressing down a trigger button- or joystick (A.k.a thumbstick, analog stick) towards any angle on a controller, it will send different signals based on how far down you’ve pressed it.
The Wooting one can read exactly how far down you’ve pressed a key for analog input. As you can see from the animation above, the further down you press a key, the stronger the signal gets from 0 to 100%.
For gaming, analog input has one very obvious application; you can control your movement speed and turns with the WASD similar to a joystick. Something that has been lacking in PC games for a long time.