When you cannot find logical data to back your claims, sensible reasons to believe one way or another, or you have insufficient experience to know for sure...then you shouldn't make a judgement. Look up the statistics, raw data, etc. When everything goes against your opinion, including the facts that are separate from the human element (which said element I have the least confidence in), perhaps it's time to pause and reflect.
What makes the Power Mac G4 light years ahead of the Intel macs? Most or all of the circuitry within the G4, be it processor, motherboard, etc., is of older design than in an Intel mac. This isn't really opinion, it's incontestable fact. the ram is older and slower, the expansion bays are older and slower, the ATA controller is older and slower, the processor is older and slower, the motherboard design is older, the system bus - the bus supported by the G4 processors - is older and slower...what more is there? Ah the ethernet...is about the same. And you can replace the optical drive in the G4 to make it of equal speed. And you can add pci cards to support faster Serial ATA drives in the G4, for a price.
There must be something that "just makes the Power Mac G4 faster than the Intel mac!" Right? So...what is it? Does OS X run more smoothly on a Power Mac G4? Do 3D games have higher framerates on a Power Mac G4? Do 3d programs render, windows open, files read and write, movies encode, faster on a Power Mac G4? I just don't believe that they do, and the personal experience of thousands of people who have used the computers in question for those tasks, I think, would agree with me; not based just on benchmarks, but also on reading numbers, looking at stopwatches, using mental timers, and getting gut feelings. So where is the foundation of a claim that the Power Mac G4 is faster than the Intel mac?