How are apples different from oranges?
Touche! I hadn't thought of it in terms of fruit.
But to answer the question you have posed:
The texture of apples and oranges varies in that apples are much more smooth-skinned, whereas oranges have more of a knobby skin. Another difference is that all apples have seeds, while some varieties of oranges actually do not. Apples are typically a little bit larger in both circumference and diameter than oranges, but this can vary by the specific piece of fruit. The average orange still weighs a bit more than the typical apple.
Apples and oranges have a more substantial difference in terms of their fiber content, with apples having about 2 grams more of fiber. Oranges have much more potassium than apples, at 496 milligrams per 8 ounce serving, as well as more Vitamin C and folate.
Apples and oranges actually have many more similarities than people are inclined to believe. They are both about the same in terms of overall sweetness, can both be juiced, and calorically are almost identical.
Above facts from reference.com
So, to bring this back to the two-pointer question, let's assume the oranges are two-pointers (since they weigh more). In the case of only going for extra points you might encounter a vitamin-C deficiency which could lead to scurvy. That fact alone should encourage people to go for two's...errrr, oranges, more often!