The Australian skipper Ricky Ponting's tried to cushion the pain for Pakistan following its meltdown at the Sydney Cricket Ground saying plenty of international sides would have succumbed to the pressure.
Pakistan needed 176 to win the second test but lost their last four wickets for for six runs to be all out for 139.
Pakistan had the better of Australia for much of the match after the home side trailled by 206 runs on the first innings.
But a ninth wicket 123 run stand between Mike Hussey who made an unbeaten 134 and Peter Siddle who scored 38 turned the match and gave the home side a defendable total.
Off spinner Nathan Hauritz took 5-53 as Australia took an unassailable two nil lead in the series, with the third and final test in Hobart next week.