Dont think the Australian bowling attack is anywhere near as good as it is being made out to be. In fact, I'll go out on a limb and call it absolutely atrocious. It doesnt help though that there arent too many attacks in this world cup that arent atrocious.
With regards to England, I think what we are seeing here is that when the pitch is slow or there is a little bit in the air, they are a bowling attack to contend with as we saw in the Caribbean during their t20 world cup campaign. This is largely because it brings Anderson into the game, and Broad is a fairly capable bowler when it comes to bowling his off cutters. Think the problem with the England side isnt necessarily Anderson, Broad, Swann or Bresnan, its actually Yardy and the batting which is pretty much a joke. The addition of Bopara looks to have added some much needed backbone, but outside of Strauss and Trott the rest of the batting card still looks fairly vulnerable. If Morgan comes in to replace KP, it would be a massive, massive blessing in disguise and I could care less if Morgan hasnt held a bat in a month.