Like Ferrsal said, he must have had a really strong seas application.
From the same website I quoted:
If my ATAR is below the guaranteed ATAR, can I still be considered for a place at the
University of Melbourne
Yes. These are the minimum ATARs for a guaranteed Access Melbourne place. All Access Melbourne applicants will be considered on an individual basis and may be selected from below this threshold. This also applies to applicants who add a University of Melbourne course to their preference list during the Change of Preference period.
Also, I heard kwong lee kow also decrease the atar required(not too sure how it works though).
All Kwong Lee Dow Young Scholars who:
Achieve an ATAR of 95.00 (90.00 if your school is considered an underrepresented school in the year of application)
Meet all course prerequisites
Apply for one of the following University of Melbourne degrees through VTAC:
Bachelor of Arts
Bachelor of Biomedicine*
Bachelor of Commerce
Bachelor of Environments
Bachelor of Science
will be guaranteed a place in that course in the year following Year 12 (the normal deferral policy will still apply)#.
This means that even if the Clearly-in Rank for the course is over 95.00, you will still be offered a place*#.
Guarantee does not include Chancellor's Scholars Program. International Kwong Lee Dow Young Scholars are subject to the international guaranteed entry requirements.
*A quota may apply for the Bachelor of Biomedicine.
#Entry cannot be guaranteed into the Bachelor of Music as selection takes into consideration a range of criteria including an audition and musicianship test.