With all due respect, you, I
With all due respect, you, I think that may be a misrepresentation of xmode.
Low range would imply a transfer case, and completely different gearing. X-mode is simply a modification of the slippage algorithm.
There are two versions: single and dual mode Xmode.
Dual mode mode's first Xmode is the same as regular single x-mode. It allows for increased slippage while still keeping traction and stability control active.
Neither is meant for regular driving, and the feature comes at the expense of normal economy.
X-mode 2 ( only available in certain trim levels of certain Subarus ) retards slippage even more than the standard all-wheel drive algorithm.
Never ever is there any different gearing other than what the CVT can supply at any given point in time, regardless of mode.