Not saying it happened this way but it perfectly fits the flight profile.
The flight profile was botched already further out. If a step down gate like that at the bridge is already 300 feet high to a standard 3 degree glideslope (the Papis by the way have 2.85 degrees
AFAIK), common sense forbids to be another 300 feet above the recommended altitude while being faster than necessary at the same time. From that point on they played "catch up".
The question is, why this visual approach in clear VMC was started that far off the ballpoint speed and vertical profile wise, that it ended short of the runway without being discontinued by the crew.
There might be technical reasons, which nobody has discovered yet, there might be factors contributing to the outcome which the findings will uncover, but for an hands on stick and throttle guy like me its hard to understand.
@Lonewolf
I'm with you on that topic, let me just add one thing: the closer the flown speed and the Vref is to the stall speed, the more this leading the correction with pitch and power is necessary.