OverClocker benchmark misses the obvious

OverClockers.com has published a series of benchmark results for six defrag programs. Unfortunately the benchmark measurement program they used is HDTune, a program that measures hard drive performamce.
What's wrong with that? It reads raw sectors, not fragmented files. In fact, the manual for the Pro version says that if you want to do the write tests you should use an un-formatted, un-partitioned disk, in order to avoid accidental data loss.
I hate to be one of those "I told you so" critics, and I feel even worse that I have been unable to do any benchmarking on my FRAGG machine for the last month because of hassles with the SARS eFiling web site. Hopefully that will come right by the end of the month and I can publish some more meaningful benchmarks.