Whats so special about 1.3GHz? Aren't there already some stable OC's for the DX around 1.35GHz?
This is just the beginning for the Nexus. The difference is a compiled custom kernel from source versus an application that overclocks and underclocks and tweeks one kernel. The one shipped with the device such as the case with the Moto Droid X and Moto Droid 2 . Which are good devices. What Motorola has done is limit our ability to modify our phones as we see fit. The Nexus S is AOSP without the nonsense that Motorola feeds us.
My belief is that the kernel that is shipped with the Motorola devices is excellent however it was built to run on the stock rom. Anything that is modified on that rom without the ability to customize the kernel in my opinion restricts the device from running at its full potential.