With 10k between , I CAN safely assume the first mot ADVISORY WAS precautionary, not an indicator of pending doom. Therefore the current Tester in his opinion did not see the need for an Advisory.The difference in front brake pad wear by a mature driver over 10k would be 1.5-2mm.
The other issue is that a tester can only ADVISE OR FAIL ON WHAT HE CAN SEE ,Unless of course one pad out of a set of 4 is abnormally worn the others a need to mention may arise.
No nothing is wrong with the test. Its a question of either a cup is half full or half empty.