I agree that they seem to be covering "commercial fruit juice." But it's an interesting question as to how chewing fruit in its natural form compares to blending it. The second question would be: why make juice at all, then? I guess the answer there is as a vehicle for the fish oil, protein powder, etc. I'm sure there's a bit of psychology at play, too: I think our drink concoctions appeal to the alchemist in each of us.