Indeed. Fruit is "healthy" because it has fiber in it. Fruit juice removes the fiber, making it basically the same thing as soda.
Also people tend to consume a lot more when in juice form. A 16oz glass of OJ is ~8 oranges worth of juice.
It doesn't have to for example if you made orange juice from an orange and didn't filter it. Eat the orange or juice it it's pretty close.
Who says eating the orange is healthy? Still lots of fructose, and these days you're not going to get scurvy if you skip it.
Most fresh squeezed fruit juices have comparable levels of sugar to soda. They may have some extra vitamins but they are not terribly 'healthy'.