Don't forget all good batting sides collapse Australia and India. Just because England batting lineup collapsed doesn't mean that much. They have got a choice who to leave out. Hopefully in the future SA will have this luxury.
I am sure the Aussie coach is aware of the England batting and if he has got his screwed on he won't be complacent. The Aussie players won't have forgotten what Vaughan did last time or that Tersco might be more of a force this time. They will know that long periods in the field will be a feature of this tour.