The Australian bowlers then shared the spoils as Pakistan was dismissed for just 127 in 37.3 overs.
Captain Mohammad Yousuf [ Images ] (58) and Rana Naved ul Hasan (27) were the only two batsmen to make any significant contribution to the visitor's total.
Kamran Akmal made 16.
Clint McKay (3 for 15) was the pick of the Australian bowlers while Doug Bollinger and Nathan Hauritz [ Images ] picked up two wickets apiece.
Earlier, Watson hit 69 (71 balls) and shared a 100-run partnership for the opening wicket with Shaun Marsh [ Images ] (41) to set Australia en route to what eventually turned out to be a match winning total.
White followed his century at the Gabba [ Images ] with a 58-ball 55.
Mohammad Aamer [ Images ] impressed with the ball for Pakistan, returning with figures of three for 53.