So: If you were in Sully's position -- both donks failed and APU not running -- are you safe enough? Can you get us back on the ground undamaged?
Sully's position was so extremely unusual that we all know about it. We add the improbability of having already had a battery fire before the double-engine failure, which also damaged the ACE batteries.
The realms of probability are getting so remote by now that I am more worried about being taken down by an asteroid strike.