Precise L/R positioning? No, that has not been my experience. But that's not what an orchestra or an acoustic piano sounds like to me, either. One hears directional cues, for sure, but the Spacestation was not designed to replace your studio monitors when recording.
This comes much closer to replicating the feeling of listening to an orchestra in a concert hall, or playing a piano in a reverberant room. There's different "stuff" happening across a broad sound field, all interacting in a sonically pleasing way.
Before I go on let me make it clear I am not setting out to diss the SS3, just trying to get a better understanding of what the SS adds over mono. So if the width aural cues are not the same as conventional stereo is it more the case that the SS3 is using the stereo signal to produce an almost omni-directional mono signal?