I agree, but the reason is even simpler: unlike the locals, tourists have no community and systems of support; they cannot band together because they don't even know each other.
They don't look more helpless (hotels and all), but they are.
This is the one thing the Mayor did right and now he's receiving flak about it. The publicity around the world this is receiving is humiliating enough. Can you imagine if he HADN'T got those tourists out and they had been gang-raped and murdered?