i think the top players say that because with lower ranked players they can figure it out on the day and still not have much trouble beating the player and their power games give them a bit of time to work out the players weaknesses and strenghts. when the top players play the top players they have played each other so much that they don't need to because they already know their games. so the top players really don't have any need to.
Go the aussies! stosur!!!
and good luck russians: dementieva, safina, kirilenko, sharapova, kuznetsova, bovina, zvonareva, dushevina.
also good luck to: azarenka, lucic, sprem, vakulenko, vaidisova, safarova, ivanovic, groenefeld, mirza, krajicek, kvitkova, larcher de brito, lisicki.