I liked the picture quality better when I compared the screens at Worst Buy...
I so wouldn't put it past the BB folks to tweak the picture to match what they want to sell you.
Plus most displays have a mode that are specifically for 'floor showing', basically oversaturating/overbrightness. Makes it easy for stores to set it up that way. Ruins the display to the point that the manuals specifically tell you 'don't use this or it'll break early'.
Edit: Damn I was reading that Slashdot thread a lot longer than I thought, heh. Beamer beat me to all the points.