PPC seemed to always be ahead of any Netburst CPUs and the 604e did very well versus a Pentium Pro
Intel up to p4 and Intel after p4 may as well be two different companies.
PPC may have been competitive in performance back in the pentium pro days, but it's not competitive now. Which isn't necessarily a problem of course, performance is only one reason you choose a processor.
p4 was designed to run at high clock speeds with no regard to actual performance, the same as the new ppc chips that are in the PS3/360.
If your benchmarks are true then it's probably not the cpu execution speed that is the limiting factor in the intel mac mini.
