Nexus 7: form "factorS"

People usually say Nexus 7 has a 7" form factor, which means the size of the screen.
I'd rather use the phrase "form factor" to describe the geometrical properties of the device, such as length, width and height when it is laid down on the surface.

These parameters are listed on the official page at Google page at http://www.google.com/nexus/#/7/specs, which read " SIZE 198.5 x 120 x 10.45mm". So the value of length is 198.5mm, width is 120mm, height is 10.45mm. I measured the screen size with the ruler, the length is about 150mm, the width is about 94 mm.


Just assume the width of the top frame is the same as that of the bottom frame, which look like it is, then the width of the top and bottom frame would be 24.25mm, and the width of the left and right frame would be 13mm. I realized that maybe the design is trying to mimic the ratio and size of real books, just like those eBook readers.
 
But considering the soft keys are used and there is only one not-so-good-front-face camera, the width of the top frame and bottom frame could be just as the same of the left frame and right frame, like that on Galaxy 10 tablet, then to me the tablet would look more prettier, and surely more lighter.


Now come to the height. While putting it side by side with iPad2, Galaxy 10 4G LTE, and HTC One X, it is easy to notice the Nexus 7 stands out. Some people may say that Nexus 7 packs some powerful hardware, e.g., quad core CPU, GPU, and sensors, into its belly, and more space is needed to solve technical issues, such as size of battery, cooling, etc., but just look at the HTC One X, it also has similar hardware, and all those pieces are packed into the phone.


What I want to say here is that, the Nexus 7 is kind of rush in design, it could have had a better design. But considering the time to show the device at Google IO, and its cheap price tag, it can be understood why it is it is now on the market. 


Is the design just a copy of the Asus other 7" android tablet?