I've got a feeling you are right, Dennis. But getting Ketron to admit it seems like pulling teeth.
Anyone who has used a product like Virtual Guitarist from Steinberg is already aware of some of the issues trying to do this on a realtime basis. However, this may not be a large percentage of arranger players, hence the wild hype about this feature.
Knowledge of these issues won't stop the Audya from being groundbreaking, nor stop it from sounding great. But it MIGHT help to deflate some wildly optimistic expectations before they ultimately disappoint.
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An arranger is just a tool. What matters is what you build with it..!