Define pro.
I dunno, "pro" for a graphic artist probably includes "actually displaying millions of colors instead of dithering so I can actually tell what color it is."
Sure, but show me where Apple defines "Pro" as "Pro for a graphic artist"?
sure, here you go: http://www.apple.com/pro/
Nice. I love the particularly relevant blurb at the bottom:
"Whether you’re a designer, photographer, or any kind of creative pro who deals with visual material, you face the daunting task of getting your colors just right. [...] Learn how you can make the most of your Mac to maximize the effectiveness of your colors."
EDIT: and as a side quest, he is trying to get them to admit that their pro product doesn't have pro specs.