People want to pay for specs. To most, that is the primary objective. They want a phone that won't be "obsolete", never mind the fact that they still upgrade their phones every year anyway.
You are right though, I should have included the customizable look of the Moto X as a feature. That is important. However, the Touchless Controls, Drive Assist, Notifications, and the Camera thing are SOFTWARE features, and the types of things that I said give Moto X its value. Hardware-wise, 16GB storage is standard. 1080p display was standard last year. 5.2" screen is fairly standard. Snapdragon 801 is fairly standard. And on top of that, no stereo speakers, no removable battery, no SD card slot, and no FM radio.
Also, I can't really speak to the build quality... All of these phones are about in the same range. HTC One and iPhone are probably at the top of the list though.
I don't want you get the impression that I hate Moto X though. I have the original, and I love it. But I bought it for the software and for the overall experience. The Gen 2 Moto X is no different. There is no category spec-wise where the Moto X comes out on top. That's OK by me, but for people who want to pay for top-notch hardware, some might think the Moto X is overpriced.