AT&T is also getting both the Wi-Fi only and LTE version the Asus Transformer Pad Infinity (TF700) tablet. It will cost $499, but the rep wasn't clear as to which tablet would offer that pricetag (probably Wi-Fi).
As for the Google Nexus tablet, it will supposedly cost somewhere between $150 and $250.
Go look at a Galaxy Note 5.3 inch display. It has pixel density of around 285 or so. Human eye doesn't see past 300. So your theory has zero merit. Not trying to be mean, but most 10 inch displays are around1280x800. Galaxy Note has 1280x800 on a display size roughly at 12.3 sq. In. While 10 inch tablet is about 40+ sq in. So do you see what the math is saying? Now pixels like meg pixels of a camera don't always translate as what we see. Samsung seems to defy math with some of their display.