overthewing
My thoughts too ran along these lines, as the "survivable space" in nose doesn't appear to have been compromised. All I can say is that it looks like the ac landed with a very high ROD (there is little to show of a ground slide), and struck the ground pitched very nose high, and that whilst the tail absorbed some of the force, the next part to strike the ground would have been the main uc. This would also have absorbed some more of the impact energy but also caused the ac to pitch down (rotate downwards). The nose was effectively at the furthest distance (moment) from the centre of rotation and when it hit the ground vertical g (deceleration) would have been too great for even a properly restrained human being to survive.
Those pax in the cabin, closest to the mainplane, would stand the greatest chance of survival. Crew and pax at the tail and cockpit would have been at greatest risk.
Crash-worthy seats which "stroke" in a vertical axis might have made a difference to the flight deck crew's chances of surviving - it all depends on how great the peak forces were and how long was their duration.
MB