It's not too late, I think many scholarships close around September/October (from memory, although I could be very wrong)
Have a look on each uni's website for scholarship. E.g. UNSW's are here: https://scholarships.online.unsw.edu.au/
Judging from the handbook pages, you are correct, there are much fewer COMP courses. How much programming you need to do in ELEC courses I don't know.
http://www.handbook.unsw.edu.au/undergraduate/programs/2012/3645.html
http://www.handbook.unsw.edu.au/undergraduate/programs/2012/3640.html
How cute, you're trying to preserve the shreds of dignity you have left. But okay, I will mention this no more on your BOS wall. It will be absolutely fantastic for your reputation. :D
He has definitely confirmed he has a full scholarship placement should he choose Grammar (the dates of release might've been different from your year?).
As for Ruse, it's a reasonable guesstimate that he'd get in. Of course we don't know for sure yet, but he does have to choose to accept the...