I'm not sure what that test proves.
You've also got to remember that Steinberg wrote the ASIO driver and the test uses Steinberg products. The test does'nt at all reflect the performance of Logic on a Mac......:p

My point is that there's no evidence whatsoever that CoreAudio is capable of lower latency than ASIO. The alleged superiority of the mac as an audio machine is nothing more than a myth.

Buy an old 2007 Power Mac G5
You would only need about 4/3GBs of memory and these sell for about £300/£400 Depending were your buying it from!
If you havent got a soundcard (get one if your geting one off these :P)