If you can show the Apple Store front page shown by the other enterprising forum member in addition to Facebook, that would be fine I think.
It's true that my logic would be flawed in an ideal world. I guess I don't have to point out that we don't live in an ideal world... So the only real logic is facts, and only one side has facts so far.
Show all the OSX UI eye-candy that you can!
Expose, Mission Control, fullscreen on different apps, workspace switching, minimizing, expanding, moar mission control! Dock-apps-magnifying. Stuff like that.
The simple stuff the air and the matte screens do so snappy and without trouble of any kind!
Your wishes are my command...
http://www.youtube.com/watch?v=5JtAMwB1P9Y
I didn't upload in HD as my connection is not that great (you can see my internet is pretty slow when loading the Apple page), but you're here to see the fluidity, not the clarity.
Both of the Apple videos I was playing simultaneously in QuickTime were 1080p resolution (1920x1080). Even so, Expose was relatively smooth and it stayed on the integrated HD4000 the entire time (did not switch to the 650M even once).
I only have my iPhone's camera on me right now, and 30fps isn't the best way to demonstrate UI smoothness, but you get the general idea. It's buttery smooth to the naked eye.
Sorry I can't show you Facebook, but there is a bit of lag there.
I did forget to show app minimizing, so I'll make another video if you want. Just LMK what applications you want me to demonstrate.
StuckInCustoms.com is a great website for wallpapers, and all of the images are high resolution (along with a lot of embedded youtube clips), and as you can see there's little to no lag on that website. (that's where my Paris wallpaper is from by the way)