Hmm 172. I would say normally that isn't enough but bearing in mind you've got the pressure of a final plus NZs tight bowling then it's harder to judge.
There's some real holes in the Aussie batting as well. I don't think I've ever seen Smith play a convincing T20 innings and Maxwell only seems to turn up when he's playing the likes of the 'Pune Warriors'. When the pressure is on he normally doesn't turn up. I don't really rate Finch that much these days either...
So it's down to the little bulldog Mr Warner I think if Australia are to chase this down. If he goes for less than 20 I'd be surprised to see Australia chasing this.