The level of death and injury may be greater in a developing country as the hospitals and emergency services are less effective.
The cost of repair may be greater in a developed country as the infrastructure is more developed.
More death and destruction may occur around a volcano in a developing country as many subsistence farmers will farm close to the volcanic cone in order to benefit from the fertile soil.
The amount of aid received is probably going to be greater in a developing country as the population's needs are greater.
Greater scientific monitoring and data gathering will occur in developed countries. Therefore, prediction will be more accurate in developed countries, although predicting an earthquake is very difficult.
Emergency action plans are less likely to be prepared or practised in developing countries.
Secondary effects may be worse in developing country, as the level of poverty means that disease is more likely to spread.