What is a breakthrough smartphone? Does it have the latest and greatest hardware components, along with an eye-popping list of features you’ve never seen before? Or does it change things in a more subtle and calculated way? Like, say, giving you thoughtful new features that actually change the way you use a smartphone? as we go hands-on to compare two phones that represent each of those camps, the Motorola Moto X and Samsung Galaxy S4.…"Compares just about every aspect of the Samsung Galaxy S4 and Motorola Moto X"