Rather easy to speculate about significant overloading based on rumor. Can we discuss the overt symptoms relative to the crew.
Things like speed vs time and distance. point of rotation vs point of liftoff. Availability of thrust margin to accomodate. Do the symptoms in this accident (an MD11 on this runway) match up with the possibility of overloading? can one discern the difference between flaps and slat annomalies vs overloading?