I think that sequence is the best fit.
The Dixie cups won't keep you conscious at higher flight levels. Hence the advice to quickly put yours on before helping others. The Dixie cups will reduce the risk of permanent brain damage and will speed up restoration of consciousness at lower levels. But you need to put them on quickly and the system is predicated on an emergency descent. They are a safety measure for technical problems, not terrorism.
Higher flow rates for pilots will prevent / delay loss of consciousness.