I can't weigh in on those animes, because I've never seen them (planning to watch Toriko and going to start reading Beelzebub again soon, Majin Tantei Nogami Neuro looks interesting too), but this story (for the sake of those reading) relies heavily on the atmosphere. The sheer brutality portrayed created the environment and tone of the series. Censoring it will really undermine the story. I want to see the sheer emptiness (futility of) and horror evoked by the manga in the anime adaption. I have really high expectations.
As long as there's bodies being torn apart in great detail. I don't ask for much...