Comment: Rebuttal #1

"Some of those examples were in fact total."

Show me. Which ones? Which ones failed 100% into their own footprint at near free-fall acceleration?

"Since Windsor clearly collapsed only on the portion which was raw steel, not yet encased in concrete, and the concrete encased portion did not collapse, we can reasonably assume the entire structure would have collapsed had it not been concrete encased. It can be said the entire raw steel portion collapsed. Undeniable. The question remains. Why would your sources omit this fact?"

Reasonably assume? In your make-believe fairy world of pseudo-physics, maybe.
Steel, " raw" as you call it, or not, does not melt or bend in any "collapse", ever, unless thermitic cutter charges are used.