I’m sure I’ve mentioned numerous times that you should pay no attention to benchmarks, and apparently the benchmarks Anandtech used in their recent PPC vs Intel article were pretty bollocks too.  So if you read or heard about that article and now believe that threads on OS X are too slow, you should read this response from Ridculous Fish.  You should also read the first comment (which was the only comment when I read it).  Then you should return to the real world and forget about all this nonsense.