Reply to Macbook Air + VCI-100 + Traktor 1.2... WTF?

Okej guys, I have always been using my VCI-100 with my stationary C2D Windows 7 PC with a Creative X-Fi via ASIO (I know, lousy card for music production... but it's sufficient for my needs). I get down to 5-7ms at the least, before it starts to crack and pop. No big deal...

I've always been using my MacBook Air for school work and love it for it's mobility, just for kicks I bought and installed a copy of Traktor on OSX. Hooked up my VCI to the Air and what the fuck?!

With the stock, built in soundcard running on CoreAudio i get down to 1ms,totally outperforming the ASIO X-Fi with keylock enabled on four decks with no sweat...

How the fuck can this be?? We are talking about a first geneeration 1.6ghz Macbook Air with integrated audio utterly wasting a high end PC. I know Core Audio is working at lowest level, but so is ASIO to?