Even against SAF's fielding, AUS almost chased 370 ..... for me that's equivalent to 420 against PAK fielding.
May be, AUS will crash PAK by 150 runs, but I think, only chance is to bowl first, get 2/3 early wickets & try to get Aussies off guard - they might get all-out in 48 overs. Then Azhar/Babar has to bat out 50 overs from one end while others keeping up the pace to chase anything around <300. Batting first, even if somehow PAK puts 330, I don't think they are going to defend that against this AUS line up; which has firepower like ENG/SAF, depth like ENG but they don't choke; because unlike Poms or SAF, in Smith & Warner, they have 2 Kohli like master chaser, who can bat under pressure & play their shots. On AUS wickets, their batting is 35-40% better than any other contemporary team - next year Poms will prove me wrong, I wish.
Besides, PAK has taken few darters who doesn't turn, neither flight the ball - these spinners will come on to bat in AUS track like slower version of Imran Khan (the Jr. one). I understand the score board pressure - but for that you need genuine spinners with flight & turn - something like Shodhi showed yesterday. AUS will walk past 350, if Azhar uses 20 overs of MoHa & Imad. To everyone's surprise, I actually back Azhar to out do any PAK spinner in this series - PAK spin attack is built for UAE dross, sluggish wickets with no pace & bounce; it's worst in world on good, true, firm tracks including Afghans, who has Rashid & Nabi.