I just did show by way of calculation (thery? YES!) that the test does NOT offer sufficient resolution to discernate wether this washing regime or that washing regime offers any advantage in this question.
They both do. Without question. And that is what Kodak, Agfa, Ilford, et al have been saying all these years.
The trick is doing it meticolously, repeatably and enough (long or many times, respectively) to reach a sufficielntly LOW LEVEL.
Theory? Yes Theory. That is waht all knowledge are based upon.
The test in this context is like trying to measure millimeters by a yardstick, it says too little to be meaningful.
But it does say that you have archival sttorage levels. Maybe. In 10 years time, when YOUR test is done.
By then it is to late of course.