I think those numbers, on their own, are as good as meaningless. Volume, weight, and price of the battery pack and either of these relative to the size/power efficiency of the car will be way more important than that relatively tiny difference in capacity.
I think the author of the article might be confused. "Specific energy" normally refers to energy per unit mass, which is a useful thing to compare between batteries. The author is acting as though it refers to total capacity, which is less meaningful.
