Wrong you are again sir...
You can see the indicated "damage" on the edge of the hood in this picture. It looks as if it is "crinkled" along the edge...
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Now, take a look at another fine image regarding that damage does exist, we see a perfectly smooth line across the furthest most edge of the hood, disproving that any damage visible from the first image exists..
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The easiest way to tell/explain that there is no modeled damage is to look at the reflections from the scenery. If you look at every single blob of green/earth matter, you see that the outer linings are rough edges. No where is there a smooth edge. Nowhere. Now, what does this mean? It means that a pre determined polygon map, or whatever it's called, has already been placed over the existing texture. Then when you go to get it repaired, it simply removes the layer.
Similar to when you paint the cars in the game. When you first buy your car, you are choosing the first ever color code assigned to that vehicle code. Then the following paint code after a new paint job will simply go over the existing code. If you were to remove a car's code from the game and modify it on a computer, you would see every code being overlapped with a new one. Each time you update your car, you update the code..
It's not that hard to understand when you open your eyes people..