will see if the controller matches  when I get home from work and will have my son hold a level to give you a better guess on the recommended pitch adjustment. My guess is that the controller does match, the problem is that that angle of the controller is shalow, so when applied to a gun you have to pitch your controller down further to make the gun level beyond what would be required with a real gun 

Howdy excellent demo, minor note with the steam vr version and vive controllers ...  When holding a gun or object the pitch is not lined up with where I  perceive it should be.   Moving the pitch down by probably about 15  or 20 degrees would make it feel more natural .  As an example when I hold out a pistol and hold the controller in a natural way that feels level the gun is actually pitched up and is not level in the game.  Now going back in,  Amazing stuff!

Steam vr version, I loaded it up and I am in the into area but can't get any further can not use trigger to get in to the menu per instruction