No one is ever smug...
...about nuclear power generation. However, due to the design of this generation of reactors, we are still only looking at a minor release of caesium, well within limits to dissipate completely within the atmosphere and a reactor that is never going to work again.
Maybe an explosive event if they cannot release the pressure, but no Chernobyl style "kaboom", the fuel rods will just melt and then cool to ambient temperatures.
An earthquake is a fairly difficult event to contingency plan for.
I would say that far more environmental damage has been done where the tsunami washed through the industrial centres and then pulled back it's cargo of toxins, heavy metals etc back into the sea / dumped it on the surrounding land.