I believe it stated a 6 cylinder engine as well. This is hardly worth the argument though. If the engine was capable of real numbers, it would have stated, "producing over 400 bhp." Alas, we still have dreamers that think a 300+ hp car is going to compliment the HSC. If the HSC were Lotus Elise light, than yes. But then why don't we buy a Lotus Elise? For a lot less.
In the end this is all pretend. Honda will do what it wants to. They have never failed to impress with their products. If there is a new NSX, it will be stellar. If not, than their next spotrts car will be stellar within its class. We worry not for Honda's capability, but for the future of our beloved X.