Creative Speculation

By the time the fire broke out it was a bare shell...it was in the midst of the deconstruction.

Everything had been removed...no office equipment, furniture, or anything else that would feed a fire with highly flammable materials that burned at varying temperatures (plastic, magnesium frameworks in some equipment, diesel fuel in the big tank for the generators that had been on the 40th floor as a part of the uninterruptible power supply system, large battery banks, etc. Mostly what was burning was the plywood/OSB that they had been using as a part of the deconstruction process, and not the mix of materials that would have been there immediately following the original incident (remember, this building had been unoccupied for the 6 years prior to the deconstruction).

The structural framework of this building was also vastly different than either of the WTC towers or WTC 7.