I think you can probably guarantee the aircraft was not at the correct speed. I’ve not flown the 737 for a bit, but I remember if you let the speed get below Vref in the flare, it would get on the back of the drag curve and crunch into the deck. This is why pilots would often fly (and justify flying) well above the command speed. Even worse, when increments were added to the command speed to account for the gust factor, they would fly well above that command speed. Throw in a long landing, wet runway and maybe a glitch with the spoilers or a reverser, then such pilots could find themselves in deep trouble.