would you do the same thing in both cases?
Absolutely YES. The passenger's and cabin crew's lives are just as important as your own, and oxygen deprivation at higher levels around 40,000 feet could be fatal.
Depressurisation at 25,000 feet would, at the worst, lead to the passengers being slightly hypoxic, with negligible risk of death. On a daily basis, turbo-prop aircraft take passengers to 25,000 feet without emergency oxygen for ALL passengers.
Remember that the Time of Useful Consciousness at 25,000 feet is 4 minutes, and, for an aircraft able to accomplish descent to 10,000 feet well inside those 4 minutes, not even the TUC has been exceeded, before we begin to consider more serious consequences which follow on after the TUC period has been exceeded.
Regards,
Old Smokey