A quick look at the points table show that New Zealand scored the most points out of every group (309) followed quite some distance behind by Australia (215) and then World Cup favourites South Africa on an abysmal (189) WUM.
New Zealand also did ok coming in second to the Pumas magnificent defence of least points scored against (those guys on looks are the form team of the tournament and have to be a serious contender). Of course, as a New Zealander I don't have any right to be cocky or wind up any ardent Springbok fans as we did only play two teams that fight it out for the wooden spoon in the Six Nations every other year, and the er, might of Portugal and Romania, those world renowned rugby nations.
Also - playing France is a worry. A lot of water may have gone under the bridge since the All Blacks shock loss to a rabid Les Bleus team in Twickenham many painful years ago. We all know what the French can do when they have their day. The question is, will their day be Saturday in Cardiff. We'll have to wait and see.