Normalising sensitivity on gamepad vs. mouse?

We've used this to implement a camera look system attached to both a mouse and a gamepad analog stick - and we get very different values off the two inputs, so using the same action means either the mouse moves too fast, or the joystick too slow

What's going to be the best way to fix this?

 

Just wondering if there's any feedback on the above question?

 

We don't have a fix right now but likely we'll provide a global mouse sensitivity value (or maybe per mouse device) which will affect the Locked Delta X and Locked Delta Y controls.