You can't really compare the Aussies to the South Africans..
No one said the Australians had poor away form..
Sth. Africans have shown year in year out that they're not the best away from home. 3N's and Super14 are a proof on this.
If you're a betting man, and South Africa are in there, a smart one would take all factors into account.
In saying that, England aren't good enough at the moment to topple the South Africans, so they should take 1st place in this pool. After that, its all on. Although they would have the easier road to the finals imo
I'm not saying they're poor away from home. I'm just saying they're not at their best away from home. A subtle difference.