If I recall correctly, the first crew encountered the issue during cruise, at which point which you have both (a) time, and (b) sufficient altitude that you can afford to push the stick forward in order to reduce the aerodynamic force on the horizontal stabiliser to the point where it will be physically possible to correct the trim without powered assistance.
Pilots encountering the issue during takeoff have neither of those things, with results that we've already observed.
This is probably it, but even if not, there's a large amount of randomness in these kinds of situations, so it's not clear you'd be able to derive anything meaningful at all. Disasters are a highly complex, multi-factor, chaotic phenomenon.
Pilots encountering the issue during takeoff have neither of those things, with results that we've already observed.