Depending on its content, chances are it'll boil down to how "worthy" the BBFC judges it to be. As a light hearted action series, Ikki Tousen would not be deemed "worthy" and was therefore open to cuts. It's aimed at the mindless proles who will obviously go on a paedophillic rampage at the slightest provocation. On the otherhand , Mardok appears to have a more serious tone and less mainstream appeal, and therefore may get away with more. Art house films and films with very niche appeal have a habit of getting away with things, especially with regards to the content here, that would almost certainly get cut in a production with a mainstream target audience. It's elitest ******** quite frankly.