Oh FGS. There is a huge difference between refined sugar and sugar in natural foods like fruit.
Fruit is designed to be eaten and to keep the eaters healthy - fruit wouldn't fulfill its function if it acted as a slow poison. The sugar in fruit comes packaged with all the vitamins and minerals needed to digest it properly without messing with the body's vitamin and mineral balance.
Refined sugar is a whole different matter. Try feeding an animal on nothing but refined sugar (and water) and it will die.
The point is that your body doesn't distinguish between natural and refined sugar. It's all processed the same. That said, of course it's better to consume fiber and vitamins with your shot of sugar than it is to take it straight up.