Poor lad.. hope he gets well soon, and I think he will. Just a few points:
a) The injuries apparent on his face are really not that bad. A black eye and superficial cuts are all one can see on that pic. If you looked at pictures of people involved in serious accidents or attempted suicides you would get an idea of how "bad facial injuries" look like. Still, modern reconstructive surgery can do miracles.
b) The damage on his helmet is a good indication of how fast that damn thing hit him, but the more damage visible on the helmet is also a good thing, as it means less of the energy of the impact actually made it to his skull. Which brings us to..
c) The bones around the eyes are not weak at all. Given their dimensions, they are actually specifically "designed" to absorb the maximum amount of impact energy in order to prevent it from reaching the eyes and the brain. At the same time, they are specifically "designed" to fracture under extreme loads in such a way as to provide the maximum possible protection to the brain, ie several bones are likely to collapse instead of just one, thus the energy of the impact is distributed across a wider area. For some more info, here's a quick link:http://emedicine.medscape.com/article/824743-overview
The bottom line is, for a given amount of impact force, the more damage caused to the helmet and facial structure the better the prognosis, as facial injuries are hardly ever life threatening compared to brain or spinal cord injuries..
The most merciful thing in the world, I think, is the inability of the human mind to correlate all its contents. H.P.Lovecraft