The figures are correct
Very capable people calculated and checked these numbers. The calculations tell you how many extra dollars you get in 2009 vs 2007, at 84hrs. The PF amount reflects the PF component of the 3+3+2+2 as well as the PF amount of your current, 2007, HDP which is NOT currently Provident Fundable.
I see no deception intended or inherent in the AOA communications. The fact that you find the amount disappointing is understandable. You could just as easily have argued that tax will take almost half of the rise being on an Aussie base. Poms could quite rightly point out that NHI will wipe out their payrise in its entirety for FOs! Or you could point out that you are unlikely to get an Aus command basing for a considerably longer time now and that SFO only gets 6 increments. You could be unhappy about not receiving bypass pay as you are on a base!
The only section of AOA members likely to be 'happy' with this deal is 50-54yo A scalers - but then they will lose travel fund and other benefits at 55 so really no one will be truly happy.
Be pragmatic and accept the deal or be idealistic and reject it. ...your choice.