According to the Atar Calculator if given a "HSC Mark" is 80, Both MX1 2unit and MX2 2unit will yeild an ATAR eqivilent of 98.5. Is this true within reason of the accuracy of the program, like inputting say 80 for chemistry. Is it true that MX1 and MX2 scale the same if you do MX2. (By scaling I...