The point is that thw switch to Intel was definitely the right thing to do. Faster PowerPC or POWER CPUs might be missed but none of Apple's competitors have them either, which means that Apple will never be behind; and that is more important than the chance of being ahead speed-wise.
This is possibly the most important point that needs to be made. Even when Apple was arguably ahead performance-wise with the G3 processors, this was hardly a universally accepted fact, and it certainly was not resulting in armies of new customers for Apple products. For better or worse, Apple is now on parity with the rest of the PC industry. The microprocessor issue has been factored out of the Mac vs. PC equation. On a whole, this is a good thing for Apple.