One thing I have noticed with plane crashes you tend to get the two extremes either light injures or everyone's dead there is not much in between.
My impression is more or less the opposite. Those extremes happen, of course, but there are a lot of crashes in which some survive and some don't. Often many survive the crash but die in the fire, and then much will depend on how close you are to the damage, how close to an exit, and how prepared you are mentally.