Even though this tread is creeping I'm helping the centipede with a two penny worth.. when we "teach JU" we are really just teaching recovery FROM unusual attitudes, not UPSET per se. The Unusual attitude assumes we have somehow mismanaged the aircraft and ended up exceeding the acceptable limits, thus we are now "recognising upset" and recovering. What is more difficult to teach or indeed demonstrate is the Upset caused by External factors such as flying through the bottom of a CB, Mountain Waves etc etc or indeed an Upset induced by poor handling of a system failure.
The brain has limited diagnosis capacity and tends to try to put the aircraft in a dynamically stable sate before recognising why it is unstable to start with, our teachings say nose low..do this... nose high...do this.. high bank... do this... Which is all well and good if you have recognised the influence that put you there in the first place.
We have limited time in the sim and it's basically about threat and error management within the training budget and capacity of the crew, an old lag Captain may be cool as cucumber but is newly typed FO is sitting like a rabbit with eyes in headlights and in this scenario "advanced training" becomes of limited value as the new FO has no capacity left for CRM or fault diagnosis.