The 970 is not only intended for Apple, IBM also plans to sell it into the workstation and low-end server market and possibly even for certain embedded applications.
Writing off Motorola is a mistake. Sure, their CPU's are primarily intended for embedded systems but let's face it, a 1.3 Ghz G4 is nothing to sneeze at.
Especially not when it only consumes around 10 watts.
Ideal for multimedia embedded systems.