Ok, but then what? 800 now? 1000 a few years from now, then 1400? Performance > bench racing. If this car is faster than a *insert current fast car here* and only had like 600 hp that should be all that matters.
You have a good point, but coming in well over 100 H.P. short will make it very difficult to offer the "performance" needed to be faster than *insert current fast car here*.