Well, overclocking the PIIIs FSB from 133 to 166 does in fact give it some advantage. This is because the Athlons PCI and AGP cards still run at 33 mHz and 66 mHz, while the 166 mHz FSB PIIIs PCI and AGP slots are running at a considerable deal higher, probably in the realm of 40-something mHz for the PCI and 80-something for the AGP. The Tualatin at 1.4 gHz and a 133 mHz FSB won't perform as well as what Tom's benchmarks show. But, nonetheless it does perform really well, but let's wait and see the official scores at 1.4 gHz before jumping to conclusions. :P
"Trying is the first step towards failure."