Intel is attempting to make processor specifications more useful to normal people by focusing less on engineering statistics and more on actual applications. What is interesting here is that Intel is essentially admitting the difficulty in quantifying the improvements of their latest hardware. It is, however, easier to qualify their improvements by showcasing their hardware using applications people use everyday.
This de-obfuscation of a processor's ability is a good thing. It means that my mother-in-law can stroll through Best Buy and understand that a given set of hardware is going to perform better at the tasks she cares about most. In the end, it really is less about GHz and more about GTD.