Mstr Caution,
There is NOT a consistent standard applied across the group for stage 1,2 and 3 recruiting. While QF, JQ and the regionals all sit the same screening, the criteria is "adjusted" to suit each airline.
So, just because a candidate passed the JQ screening does not necessarily mean that he/she would have been deemed acceptable to other "group" airlines. It depends upon the "weighting" of scores.
The only component which is standard across the group is the sim ride. That's assuming JQ haven't "tweaked" it in the last 3 years since I left the group.