ToUC numbers are quite frightening although applicable to a sudden and complete loss of pressurisation.
There is a lucky moment in that, the situation is clearly understood at once by a qualified pilot, recency and proficiency level regardless. Which triggers the drill and steers the actions towards a survivable outcome.
Different from the above, all the events disussed here evolved into tragedies while their crews were not sufficiently aware how critical the pressurisation problem was.