thanks for your comment. However, I still believe it's technically doable with reasonable effort.
In short we forget how wonderful the MkI eyeball attached to the Mk10 human brain actually is to sense inputs (topography, wind, aeroplane charactersitics) and meld these with prior experience to produce a safe and effective plan.
The words in (my) italics are the key here. Complete engine failure on final approach is evidently judged to be such an unlikely event that it's not included in training or simulator exercises. That was most probably a contributing factor to the fact that the airplane got near the stall and in that process irrevocably lost some dearly needed energy that might have taken it to the runway.
And as others have said, the flight crew is not to blame for it. They were faced with a situation no one had prepared them for and did what they could - saving the lives of all aboard, which in the end is all that matters.