The Hudson outcome has absolutely nothing to do with the aircraft type, but everything with the decision making and the ability.
And ask Sullenberger what he thinks about his 320 that refused to flare the way he wanted to
What part of this text from the accident report don't you understand.
The NTSB concludes that, despite being unable to complete the Engine Dual Failure checklist, the captain started the APU, which improved the outcome of the ditching by ensuring that a primary source of electrical power was available to the airplane and that the airplane remained in normal law and maintained the flight envelope protections, one of which protects against a stall.
As there were no safety recommendations relating to the performance envelope software; work it out for yourself conf iture what is being said here.
Once you have you will realise that criticising FBW has more to do with misplaced ego than any design deficiency.