Check out this page to see some different numbers from what is seem on Apple's site. Reading the hate mail at the bottom of the page is pretty funny. As we should take any kind of comparisons with a grain of salt, this guy looked in the PDFs provided on Apple's site. I think the most obvious fudge is the turning off of HyperThreading on the P4 and Xeon procs. Also using libraries that the common computer buyer/user would have access to is pretty dumb in my book. Its worth a read. It gets beyond the Steve Jobs Reality Distortion Field a little bit.