Is there a difference between natural fruit juice and the kind of "fruit juice" with high levels of marketing behind it e.g. Tropicana?
Fruit was given to us in a high-fiber package, and should be consumed that way. The fiber also ensure we don't over consume. You might be full after 1 apple, which is like 1/8th a glass of apple juice.
So eating real fruit, you'll get less sugar, and the fiber helps with digestion and getting the other nutrients that are in fruit.
Haven't most if not all of the commonly available (popular) fruits today been refined through selective breeding to be more appealing to us? What was lost vs. gained in this process?
(I have no idea, I'm not trying to be rhetorical. My guess is lots of more sweetness and perhaps less fiber, in a much larger fruit.)
Don't really know if there is a difference though.
[1] http://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:320...