That average is going to be skewed an
awful lot by the serious OCers. Any program like 3DMark is instantly goig to attract the OCers, infact its the target market of the program, so the average core i7 920 recorded on the Orb will likely be running in the 3.4-3.6ghz territory, and many over 4ghz, which is obviously going to mess up the result, a heck of a lot.
Considering that then, the fact that the average is reported as 30% above his 17K figure tfits right in line. His figure will be right at the bottom, any sort of OCing or tweaking is going to result in a higher score, so, for the average to be 30% higher makes perfect sense. A 40-50% OC is par for the course for a decent i7 920 chip.
Edit:
There you go, an i7 @ stock scoring
under 17k in the CPU test:
[]http://images.hardwarecanucks.com/image/mac/reviews/intel/corei7/3dmarkvantage.jpg[/IMG]
Just look at the i7 965 score to see how well it scales with clockspeed, which shows any OCing is going to have a huge effect on the result. His CPU is fine!