RE: what can you say about this?
This is not how carbon fiber works. Carbon Fiber parts are laminar buildups and are not brittle like glass. If you scratch the surface it will not fracture at that scratch. It is actually a relatively flexible material. In tension it is about 15x stronger than aluminum. However under compression it is as strong as the resin that holds the layers together. In a crash or head on collision this upper brace is under compression which is it's weakest mode. So it's not surprising to see that it shattered. I have seen a couple of these that have shattered under the same conditions.