Through this year I've learnt one solid fact, the VCE is extremely biased towards the Maths and Sciences. Have a look around, the vast majority of those who have obtained 95+ have done the 'asian five' or 'curry six' - (Methods, Spesh, Physics, Chem, Acc). Nearly all of these subjects get scaled extremely, yes they are hard however the learning curve for these subjects is quite smaller for those, who are naturally biased to the type of thinking that these subjects require. From observing those at my school, the kids studying the aforementioned subjects *generally* don't perform as well in English. Those A+ marks in Spesh SACs are quite rarely matched in English SACs.
I'll use one subject from the humanities to clearly illustrate my point - History: Revolutions. Last year, a raw 40 scaled down to a 39. I'm doing this subject myself this year, along with Chemistry (as a comparison). To obtain an A in a Revs SAC I had to do the following. Firstly, obtain a basic grasp of what happened, this required 3 months worths of classes in which we were taught the 'basics'. In about a week prior to the actual SAC, I started revising. This included revisiting all the content firstly on a basic level, then on an analytical level, and finally synthesize all the information to be prepared for the SAC. I had to memorize 5 quotes, 6 four-numbered statistics, and have my essay in my head - which totalled 10 pages in the acutal SAC.
For a recent Chem SAC I also obtained an A. The task was on electrolysis, galvanic cells, and fuel cells. This was taught to us in ~2 weeks. 4 days prior to the SAC I did all the extended-response check point questions releveant to electrolysis. I also did about 10 for each of the other areas of study. The SAC was about 4-5 pages long, and we finished it in a period.
Now, the point I'm trying to make is this. For the lead up to the exams, I will (and have) put in about 3x the hours for Revolutions than Chemistry - to obtain (hopefully) A+ on both of the exams. However, the reward for my efforts in History are it being scaled down. In Chem, a 35 gets me a 40. I'm not trying to insult the maths/sciences, what I'm saying is that those subjects compared with the humanities require a totally different approach.