I can't confirm this for the people I know... why do you think it would have sold better than the original DS? People who bought the DS Lite probably didn't already own the DS, and people who already owned the DS probably didn't have a reason to buy the Lite version (apart from a new and sleeker design, I can't remember any groundbreaking innovations that would justify buying another DS onsole for many people, unlike the DSi with its new camera function).