it is all a bit of a joke though. There's Zero rust on the suspension components on my Father in laws Qashqai so why isn't a Nismo part built to the same standard? Why isn't a powdercoated and treated part not the same or better.
It seems to be the message, you can treat rust but you can't resist it. Only way to do that is to stop using the car, which defeats the point of treating it in the first place.