According to Steve Barker :
hotter than a propane torch point blank eh? well alrighty then..... i
think not.

They used a propane torch to start those fires. It's _not_
representative of conditions _during_ the fires.

Those buildings were "open" structures (openings instead of doors
and windows), and didn't seem to have any interior wall coverings
like drywall. These were representative of insulated sheds. Not
houses.

Houses aren't built like sheds. People generally don't insulate
sheds either. Fire pattern is rather different in enclosed spaces
with drywall.
--
Chris Lewis,

Age and Treachery will Triumph over Youth and Skill
It's not just anyone who gets a Starship Cruiser class named after them.