I voted slightly less safe, I expected the cooling failsafes to work without power. Apparently, on newer reactors, they do.
That being said, even if the cooling had failed completely, including the emergency seawater flooding, with the main concrete containment structures surviving, the worst case scenario might be slightly worse than Three Mile Island(which destroyed a reactor, and that was about it). Sure, there's a bit of radiation released, but the toxic chemicals that could be released from a fossil fuel plant going up would probably be at least as bad.
They should look at upgrading the emergency cooling systems to newer standards that are gravity fed, that would have made this nearly a nonevent and might have even let them bring the damaged reactors back online, which doesn't seem likely now. A review of the containment structure design would also be in order- the spec called for surviving an 8.2 quake, this was an 8.9- significantly more powerful. They did survive so they might not need upgrades, but I'd still review the design to be sure they weren't just incredibly lucky.
All in all I'd say that this shows that while nuclear power has risks, these risks can be managed through a solid design and well trained operators.