Thanks John Citizen; I've now downloaded the full register and have found the weights. As you say, the A320-232s are all registered as 73,500 kg MTOW - some of the registrations are VH-VQA to VH-VQZ.
So the gap between registered MTOW and actual or AFM MTOW is elusively there. Thanks to the others who pointed to the more likely weights. wirelock - here are some MSNs: 2587, 2573, 2515 if you pass close by the SRM
I know some of the European LCCs move the MTOW weight around pretty freely so as to fit with routes and landing fees. I'm sure it is all being done in a formalised and approved fashion, here and there
