What could "Grand Central Dispatch is a better way to handle threading, queues ("threading for OO")" possibly mean? A better way than what? Erlang/Akka Actors?

What could "Grand Central Dispatch is a better way to handle threading, queues ("threading for OO")" possibly mean? A better way than what? Erlang/Akka Actors? Java concurrent libraries? Clojure STM? Single-threaded async callback fest? Threading for OO? I'm not even sure what the author is comparing Obj-C for web developement to.