have you read this thread at allApple's website disagrees with you: "Every new Mac features powerful dual-core or quad-core Intel processors..." see?
those very words that you quoted from the apple website, are precisely what was this discussion over. we don't agree with apple's wording at the very least... so you cant use those wording to "prove me wrong"
if apple's website refer to the current quad core (dual dual-core processor) mac pro, they should change their wording to NOT say quad-core processor.
if apple's website refer to the upcoming quad-core processor (octo core) mac pro, bring it on.
but two Xeon (not C2D) processors don't make a quad-core processor.The way I see it they are refering to "Every Mac". So, every mac now comes with a C2D processor. The Mac Pro however can have two C2D processors making it a quad-core processor. The wording is just really confusing.