LOL...
I think I agree with both perspectives, in that I agree with Richard on the assertion that it's impressive that an S30Z is able to be modified and keep up with exotic machinery, but then again, what does that mean? Sure part of it is driver skill and experience, it's surely a lot more expensive to break some of those other cars and that gives the driver / owner confidence to drive an S30Z harder knowing it can be replaced at a lower price point.
I still cheer on the Green Hornet and the Siddin's effort in their "targa" 240z. But both cars represent a significantly modified engine outside of what would have been available at the time. So that's also kind of the point.