TPE 331
The mismatch between the two engines has rather overshadowed the fact that the captain pulled the power levers well into the ground (beta) range some 8 seconds before impact and about a second before the stall warning was recorded.
Having experienced this (just at the flare) on a demonstration flight of a well-known STOL aircraft, I can verify that the braking effect is, to say the least, dynamic! It did, however, result in a very short landing after falling to the ground.
The effect at altitudes above about 6 feet must be horrific.