If I move the controller one unit the Avatar hand should move 2 units.
This was mentioned in the document
"Maintain a 1:1 ratio between the movement of the user’s controller in the real world and the movement of the virtual representation. This can be rotational or translational movement in space. If you choose to exaggerate the user’s movement in VR, make it so exaggerated (e.g. 4x) that it is readily obvious that it is not a natural sensory experience."
How to make it 4x exaggeration in unity3d?