@Tarzanboy.
I'm the first to admit that DLR is far from perfect but during our induction week (LH Regional) we were shown a slide with the results of a study into the outcomes of pilots according the various criteria.
Basically the study looked at at how various factors were related to success, as measured by achieving satisfactory recurrent check grades.
Top of the list were aptitude tests with a 50% effectiveness. This compared with hours flown which was only a 10% predictor of success. Interviews were also quite low in the list.
I'm afraid I see absolutely no evidence to suggest that the DLR test is irrelevant, in fact quite the opposite.
KT