Mohammed Atta and Osama Bin Laden delivered 80,000 pounds of flaming jet fuel into the twin towers of the World Trade Center. Quibbling over, or minimizing, the ragheads' capability to use the weapons they possess is rather silly.Within a day or two of 911 I heard on NPR (NPR!) that calculations were being run at the Penatgon with the intention of being able to claim the jets used in the attacks, with their fuel and velocity, as WMD in a world court, if it ever came to that.
As I recall, they did give a number on the program, expressed in tons of TNT.
Explosive power is calculated using TNT as a factor of one. This is a world standard when determining the strength of an explosive.