MacSpeedZone isn’t happy with Macworld’s Intel iMac speed testing. You won’t like MacSpeedZone when he’s angry.
Basically, the author of the article points out the importance of the metrics being utilized and how accurately they reflect the performance that the user will experience. Just because a new processor can pound out integer operations twice as fast as the old version doesn’t mean everything will be twice as fast.
While an automated performance test may be better than the clock speed for quantifying performance, it’s not perfect and each user should analyze each different metric to see which computer is better for them. Apple’s marketing hype, I mean performance figures, are good for drawing attention, not for actual evaluation.