The only technical part of this question I could deduce was about the consistency of the breakup point for runway overruns.
Once the plane has taken a prang outside it's certified load conditions, it's a given that it will break something in its joints.
The level of load and its points of application are expected to play a significant part in the breakup. Since runway overuns generally have the gear extended and the pitch fairly flat, the sucessive impact loads of running through ditches and over roadbeds have a tendancy to result in consistent fracture points of the fuselage, engine tearaways and gear collapse up into the aft part of the wing.
Best to avoid any plane that is about to do a runway overrun