OJ is just sugar water though, the value of fruit is (I think) the whole fruit.
its also worth noting that fruit is sugar water. its 98-99% water + 2% sugar and fiber
Oranges, apples, etc are only 85% water. Grapes 80%. The rest is fiber and is likely why your body tells you to stop eating them. Two and a half apples is a lot less appealing than a can of soda (actual sugar water).
The whole percent water thing is completely meaningless though, human brains are 85% water and babies are 80%.
you can easily drink the equivalent of 12 oranges, in one drink but very very few people can eat 12 oranges in one sitting
there is wisdom in that nature packages sugar with fibre, at times lots and lots of fibre (cane sugar for example)
When it's refined into crystals, is when it does more damage, particularly when consumed to excess.