Having broken carbon and aluminum, I'd say the average carbon frame is more likely to survive a major crash than an aluminum frame.

The aluminum frame sustained a dent in the toptube - handlebar slammed into it during the crash. The dent soon led to a crack, making the frame worthless.

And the carbon cracked at the water bottle bosses, which I would assume are a weak spot. To put that in context though, the carbon water bottle cages, which ripped out the bosses, were just fine.