This is a terrific resource, especially the "Device-W" column. Thank you. For the tablets though, I'm finding the table's usability diminished by the inconsist

This is a terrific resource, especially the "Device-W" column. Thank you. For the tablets though, I'm finding the table's usability diminished by the inconsistent width/height relationships. For most of the devices width is smaller than height, but for a number of them it's the opposite. Why is this? Is this how the manufacturers report the #'s? Edit: I realize now that it's because different tablets have different default orientations. Yet another challenge in designing for mobile.