A note of caution for those who might be tempted to generalise or extrapolate from the particular to the general and play test pilots with their light aircraft ...
Be aware that stall definitions and test protocols have varied over the years. In particular, some aircraft were tested only to the point of stall and to pull such animals into the stall might well involve some excitement ... like being upsidedown and/or spinning.
Be very wary of using rudder to do things in the stall.