Bridge CL over DL balsa model: (CL/DL) = 4,400:1

16 gram balsa wood has a safety factor of 4400 to l or 4,400:1
CL = Collapse Load
DL = Dead Load
What was the safety factor for the WTC Twin Towers?
John Skilling said it was 20:1 a lot, lot less than the balsa wood model bridge that I test collapsed in front of a student class audience.
Can a Balsa Wood model Bridge hold 4,400 times its own weight
while a Steel WTC Twin tower could only hold a very, very lowly amount of weight, as merely 20:1
Why does Steel only hold 20 times its own weight, while Balsa Wood holds 4,400 times its own weight? Can anybody answer that perplexing question in a logical manner for me? If so, please comment below so I can further my knowledge on this Engineering & Physics subject.
Something is truly fishy & discombobulating & highly confusing, scientifcally, here!
Do you agree?
Comment, if you like...