Interpret the term "sugar" to be "free sugar" as defined by the WHO[1] and things will make a lot more sense:

> “Free sugars include monosaccharides and disaccharides added to foods and beverages by the manufacturer, cook or consumer, and sugars naturally present in honey, syrups, fruit juices and fruit juice concentrates"

In other words, the natural sugar in apples technically wouldn't be applicable.

[1] http://apps.who.int/iris/bitstream/10665/149782/1/9789241549...