Okay, wait. You mean you’re just sticking the cut fruit in there, blending it, and drinking the entire concoction? In other words, you’re not actually leaving all the pulp, skin, and fibre behind. You end up with a really thick drink, then, right?
If that’s the case, nutritionally, they should be almost identical, I would think. I hope so, because we do that all the time. Sometimes, it’s so thick you can almost chew it.
If, however, you’re running the fruit through a juicer that extracts the juice and leaves the pulp behind, they’re not at all nutritionally equivalent. You’d be drinking just the calories, sugar and vitamins(which are good, granted), but leaving all the really important fibre.