and what Sully would have done in a badly planned demo flight in Indonesia
I suspect Capt. Sully would hae been very unlikely to have accepted a very badly planned demo flight in the first place.
In flying planning is everything - that is what we do. I also doubt that Capt. Sully would have started a planned flight and then decided on a whim to to change the plan at the last minute - although I am not suggesting for one minute that this happened on the Sukhoi disaster.