the original manga of Bleach is rated Teen, which if i recall is 13+, so a 12 cert from the BBFC for the anime version, sits about right in my opinion, a 15 is pushing it a bit
i wasn't saying Bleach should be getting a 15 cert, just using it in my example, and just because it's a kids show in japan, it doesn't mean that the BBFC would think otherwise, do remember, we are two completely different countires, with different morals and ethics, different ideas on what is right and what is wrong, at the end of the day, they call the shots, whether we like it or not
not only that, but i believe you haven't even touched these shows, which is what irritates me about your statement, because that means you don't understand the material, and just make the claim that it is for kids, even though, as Stu has said above me, that there is indeed use of profanity and of course, blood (although the jury is out on profanity, for example the japanese for excrement is usually translated as **** when it comes to subs), plus even though japan has different ethics, i would think that they would be a bit concerned as to what their children watch
which leads me to my next example, the Samurai Shodown OVAs, if i recall, the blood has it's colour changed to white, now seeing as this as far as i recall, has never been released outside japan, it hints at censorship in order to appeal to a wider audience/get the thing on a decent TV slot