It is in the context of dieting advice “instead of a chocolate bar, eat an apple” (still about 20 grams of sugar/100 kcal, but about half that of the chocolate bar)
The other difference is that while chocolate bar makes you more active if you was low on sugar, you are still quite empty, hungry and looking for more to eat shortly after you ate that.
If you eat apples, you hit limit soon. Apples also do not work all that much if you actually need quick energy when doing something straining. It does not have that "immediately feel better" effect (which motivates you eat more and more).
If you eat apples, you hit limit soon. Apples also do not work all that much if you actually need quick energy when doing something straining. It does not have that "immediately feel better" effect (which motivates you eat more and more).