What exactly do you expect a Global Illumination simulation of lighting using radiosity derived shader maps? We aren't there yet eventhough instant radiosity is now possible with CUDA. Heck this HDRI effect on the cockpit surely isnt realistic either but then to get soemthing close to our eyes requires alot more computational reousrces plus 'participating media' computations as well plus the whole computational fluid dynamics to make things feel the way they do. This is a FUN simulation afterall