nuclear physics - Fukushima vs Thorium

This is not a question about traditional nuclear power plants vs the thorium based. But about the Fukushima plant itself and the very negative environmental effects from its meltdown of reactors 1 and 3 vs a Thorium based design under similar natural stressors.

Fukushima leaking radioactive water for ‘2 years, 300 tons flowing into Pacific daily’

This is the basic outline of what happened to cause the melt down.

Immediately after the earthquake, the remaining reactors 1–3 shut down automatically and emergency generators came online to power electronics and coolant systems. However, the tsunami following the earthquake quickly flooded the low-lying rooms in which the emergency generators were housed. The flooded generators failed, cutting power to the critical pumps that must continuously circulate coolant water through a Generation II reactor for several days to keep it from melting down after shut down. After the pumps stopped, the reactors overheated due to the normal high radioactive decay heat produced in the first few days after nuclear reactor shutdown (smaller amounts of this heat normally continue to be released for years, but are not enough to cause fuel melting).

http://en.wikipedia.org/wiki/Fukushima_Daiichi_nuclear_disaster

I am just wondering if this was a Thorium reactor, would all of this had taken place in the first place? Because thorium needs to be constantly primed and not cooled.

I am not an engineer nor a paid scientist so please excuse my ignorance. I am just very curious.

Thanks.