I don't think we're mixing our left and right up!!! It seems that keys are not mapped the same way. Could you get your keyboard key codes with this command:

$ xev | grep keycode

On my computer if I press first on the left logo key then on the right one, I get:

$ xev | grep keycode
state 0x10, keycode 115 (keysym 0xffeb, Super_L), same_screen YES,
state 0x50, keycode 115 (keysym 0xffeb, Super_L), same_screen YES,
state 0x10, keycode 116 (keysym 0xff20, Multi_key), same_screen YES,
state 0x10, keycode 116 (keysym 0xff20, Multi_key), same_screen YES,

NB: if the command fails, try to install the package “x11-utils” first:

$ sudo apt-get update
$ sudo apt-get install x11-utils