Partner awards cost a touch more compared to flying on QF.
As you are flying on MH, it comes out as a Partner award. From what I can gather from Mileage Monkey, it is 4096 miles, which is 65k each way in J, hence the 130k price for a return award. If QF were to fly direct between SYD and KUL, the price would be 120k return.
Hope that is the answer you are after.