This is a bit tricky to explain...
Reflective surfaces (silver, for example) use an 'environment map'. That is, a image map of what is reflected by the silvered surface.
What you're seeing is part of the reflection.
We made the map have more light in the top left, because that matches where most of the light in the non-reflective lighting model comes from.
If it were an actual reflection, your face would be staring back at you
The map is actually much larger than the small amount you see there - if you do a large blob of silver paint tube (making it as spherical as possible...) you can get a better idea of the more deatil in the map.
But more detail in the flat reflection would interfere with the image.
So the short answer is... Yes, it's supposed to look like that. One of the things a 'pro' version of ArtRage could possibly get is a way to change the reflection maps.
AndyRage's mantra for graphics engine code:
"Sure - how hard can it be?"