For those of you who like to be rather specific about your smart devices and their displays, it's time to get down to brass tacks about the Galaxy Nexus and it's OLED display. Specifically what we want to focus on here is the fact that when you've got PenTile in play (that is, on a Super AMOLED display like we're seeing here) instead of NOT in play (like on a Super AMOLED PLUS display), you get loss of detail. It becomes important when you have a close look at how pixels are shared (or not shared, as it were with S.A.PLUS displays) and what that in itself means for sharpness of picture and text sharpness.
Thanks to FlatPanelsHD we have the image you see below showing the difference between Super AMOLED PLUS (on the left) with its single RGB structure and Super AMOLED without the PLUS (on the right) which shares sub-pixels, this in the most immediate sense making text and sharp edges appear slightly fuzzy when you get in close. The clear advantage is in the "PLUS" which has appeared on a few Samsung devices thus far but does not appear on the Galaxy Note nor does it appear on the Nexus.
Pixel density also counts for a lot when you're considering sharpness, with the following approximate values being true without considering subpixels: Galaxy Nexus has 315 ppi, Galaxy Note has 300 ppi, iPhone 4 and 4S have 326 ppi. But given these numbers, also calculated by FlatPanelsHD, you'll find some contrary results to all you know and hold dear:
Galaxy Note: 1280x800x2 = 2.048.000 subpixels
Galaxy S II: 800x480x3 = 1.152.000 subpixels
Galaxy Nexus: 1280x720x2 = 1.843.200 subpixels
iPhone 4/4S: 960x640x3 = 1.843.200 subpixels
That brings the Galaxy Nexus down to something more like 200 ppi, and it's not called what some might classify as a Retina Display because in reality, not all of those pixels count towards a total. Of course none of this matters when you consider the fact that the Galaxy Nexus will be the first device to incorporate Android 4.0 Ice Cream Sandwich and will be Google's device of choice for hero status on Ice Cream Sandwich as well, so toss it all out in the garbage! Or Samsung, keep going with RGB, it's hotter!
NOTE: We definitely encourage you to take apart this math piece by piece and argue your point in the comments if you wish, but note also that the Galaxy Nexus is running a 720p display and looks MIGHTILY impressive in-hand. Bear that in mind.
Galaxy Nexus Hands-on:
Ice Cream Sandwich hands-on demo
Samsung Galaxy Note hands-on: