Fair comment, although I feel when you have numbers like 18 out of 25 being thrown around it tends to do more harm than good. People will prepare and perform as best as they can without such info.
When I did my selection processes; the worst thing thing that could of happened to me would be having the numerical reasoning test 1st, then had I not completed the "18 out of the 25 questions", it would have been in the back of my mind for the rest of the day, possibly having an impact on the other assessments.
Despite this I appreciate he/she was just passing on information, and contributing to the forum.
For the record I got less than 18 out of 25!
randomair