You also need to bare in mind that the .com.au was sold on a snapper domains platform, where the .com was sold on the private market. When domains are sold on the private market you have far longer lead times to sell domains and far more money can be put on the table. therefore I do not thing the comparison is fair also ringtones in my eyes have died off a lot since 2010 vs 2012.
Yeah the fact that snoopy hasn't answered suggests he agrees that the comparison isn't fair - he knows the .com sold for crazy money. He only tried to make the comparison to try and put a downer on Aussie domains, I suspect (although please let me know if that's not the case, snoopy)