Bobby boy:
Does failing a trainee necessarily constitute a failure of the training system? I think training is about producing a satisfactory standard, if available from an individual. A significant number are not capable of a satisfactory standard. If a trainee isn't up to standard and fails to validate then our part of the system has worked.
One TC watch manager (not yours) is well known for filtering trainees to get a good standard. So the fact that Z watch have a 100% pass record doesn't necessarily mean that they are better at training - they may just have been lucky with the standard of trainees allocated to that watch.
There is of course another possibility... but not one that I believe to be the case.
I have no reason to believe that my watch has anything other than a 100% success rate at training but our pass rate is about 70%.
Point 4