I don't consider the KPA (which DOES sound as good as a tube amp) modeling.
But it *is* modelling. The Kemper is not a tube amp but sounds like a tube amp therefore it is a digital device modelling an analog one - after all it's not playing a tape of the recorded amp or something. This is and has always been a distinction without a difference. While clearly (in my opinion) the Kemper sounds better than any other modeler I have heard and it derives it's model in a different way than say and Eleven rack or an Axe it is nonetheless still a modeling amp.