Pakistani bowlers are relatively inexperienced and they had no previous experience of playing in Australia. They could have arrived a few days earlier and played a few more warm up matches to get acclimatized with the conditions. Anyway, lets see how they perform during the second test. Their morale is going to be low, but a few early wickets can change that.
I have not seen Pakistan defeating Australia even when they had world class bowlers like Akram, Akthar and Waqar Younis because their batsman always fails them, i am not sure about the win percentage they have in Australia but i am sure it is pretty low, the present team is much younger and there is no way they will trouble the Australian batsman and their bowling is lethal to any top teams and Pakistan will find it difficult to face them.
Pakistan in Australia Test Match 1964/65 drawn 0-0 (1)
Pakistan in Australia Test Series 1972/73 Australia 3-0 (3)
Pakistan in Australia Test Series 1976/77 drawn 1-1 (3)
Pakistan in Australia Test Series 1978/79 drawn 1-1 (2)
Pakistan in Australia Test Series 1981/82 Australia 2-1 (3)
Pakistan in Australia Test Series 1983/84 Australia 2-0 (5)
Pakistan in Australia Test Series 1989/90 Australia 1-0 (3)
Pakistan in Australia Test Series 1995/96 Australia 2-1 (3)
Pakistan in Australia Test Series 1999/00 Australia 3-0 (3)
Pakistan in Australia Test Series 2004/05 Australia 3-0 (3)
Pakistan in Australia Test Series 2009/10 Australia 3-0 (3)
Pakistan in Australia Test Series 2016/17 Australia 3-0 (3)
Currently Pakistan 13th time in Australia they already lost 9 time and draw 3 mean they never won any series in Australia.