I have heard (unsubstantiated by me) that had the Hudson glider not been an Airbus, sufficient power would have been available on one of the engines to continue flight for a powered landing on concrete.
My feeling is that given time at the end of sim check/training, one should practice a two-engine failure and "landing" in a two-engine airplane. The chance of that happening in the real world is mighty slim, but learning to manage energy in any airplane you fly is a definite advantage, and skills that can practically be applied in that real world that we live in.
Chesly was/is Chesly because of practice, knowledge and commitment to his craft, which certainly contributes to and enhances ability.