Except that would be the class it raced in - if it were racing - the same point you made. The RX7 has plastic overfenders, yes, but the wheels would fit under stock guards (just) anyway... They are only 10s. Some blokes who go out to turn laps on a budget start with cheap race only cars, simply because they are usually 1/3 of the price of road registerable versions.
Anyway the cheap, old RX7 does well with some great driving and a simple (untuned) set up to be only fractions of a second off the R35 this time out. And FDs had victories of their own in Production Car series against far more expensive cars in the 1990s, so they can hardly be placed in the same catagory as the V8 whingers.
The R35 is a nicer, newer thing, obviously a technological powerhouse... Its benefits are indisputable. Oh and we can't forget the WR35XYZ parts fitted to it! These posts remind me of your advertisement-type posts in the trader section on LS1.com.au, Martin.