The second is a little out there, as far less performing PPC CPUs are still in production and as a matter of fact PA6T is still the most powerful dual core embedded PPC around ...
No it's just a SoC designed for laptops that should have replaced the aging G4 models by something with a performance near to the faster G5 systems.
we have a few benchmarks VS G5, made by an aerospace company using optimized code which resulted in the PA6T outperforming the G5 by several orders of magnitude (and by extension also x86 CPUs younger than 2004)