Don't get me wrong, but professionals are those who deploy Win3.11 machines running on embedded i386 cores for big money today. It's more about meeting some specs, getting certifications and providing reliability than it is about technical details.

Your definition is more bleeding-edge-users who are constantly limited by technology and could justify to pay a couple thousand for a 10% increase in performance. This group overlaps but is not equal to the professional users.

Many real professionals will love the new MBP lineup while many more will hate it.