By what standard do you see Fukushima as being worse? Number of casualties? Number of people who had their livelihood directly affected? The effect on the biosphere?
Let's just say that hundreds of people will work in extreme conditions (high radiation, damaged nuclear material, damaged buildings) for the next 20 years to keep this thing from collapsing/... before the next heavy earth quake hits.
... and the region around the plant has been quite severely affected: long term evacuation of inhabitants in some areas, kids can't play outside in others (and must take constant "precautions"), large scale decontamination needed (removal of top-soil, etc), fishermen not allowed to fish (it depends on the species and their feeding habits etc, some have shown no contamination, others are way, way, over the limits), many problems caused by loss of confidence (obvious huge drop in tourism, a very hard time selling farm produce, etc).
So sure, the number of people that started glowing green and exploded is small (:-), but the financial and social repercussions of the Fukushima incident are not small at all. "Number of people that died" isn't the only statistic to look at when evaluating such things...
1. Number of people who died, or will die, weighted by how they die -- painful slow death by internal organ cancers being pretty far up there on my chart.
2. Number of people who have traumatic long term health episodes, like cancer, that degrade their quality of life. Even if it isn't until much later.
3. Number of people who have to leave long-established hometown territory and give up their homes, to live in crappy housing (way better than an American FEMA trailer, but still sad) until they die.
4. Number of children who get thyroid cancer caused by radioactive contamination that would not have otherwise -- even though Japan has arguably the best health care system in the world, and virtually all of these kids will live. Still sucks to have cancer and surgery when you're 8.
5. Incidental casualties (including cleanup workers). The actual local Fukushima plant boss became something of a hero after telling Tokyo (as in Tokyo Electric Power Company) to fuck off and calling his own shots during the worst of it. He died of cancer[1] last year, and also had a brain hemorrhage last year, ostensibly none of which was related. But there were a lot of young workers that went in there and like, did manual labor. They might be alive, but a lot of them aren't all gonna be fine.
6. Degradation of the best food on earth. I read in a Seattle newspaper (I'm pretty sure) that effectively all tuna now commercially caught have higher levels of cesium than before Fukushima. First the mercury, now this? NO FUCK YUO!!
And here in Japan it's like spinach, potatoes, meat, fish... they can only test like 0.1% of it (which is bullshit but that is another post).
7. And, since I am me, my personal standard of how fucked it was accrues bonus points for: each of the 17 times I was forced to choose between not bathing or bathing in cesium water (we did Perrier sponge baths at first but then bottled water became too scarce to use other than for drinking), the 1 time my local supermarket (high-end rich-people supermarket btw) had to hand me a letter apologizing for selling me beef with illegally high cesium levels, and the 50 hours I spent roaming Tokyo in search of clean bottled water in the aftermath.
I just can't see any reality where Fukushima isn't worse than New Horizon, on balance. Not that New Horizon wasn't bad. It just wasn't one of the worst disasters since I have been alive, where Fukushima was.
[1]: ht NO tp NO NO SORRY ://www.huffingtonpost.co.uk/2013/07/09/fukushima-nuclear-disaster-masao-yoshida-dead-cancer_n_3568293.html
At least that accidental huffington link explains why my computer had been audibly churning out all sorts of sad (but unrelated) human interest stories while I typed that post....