I was pointed here by ithiliana because I'm interested in studying Japanese fandom and have been stumbling over consent issues a bit. This looks like a very interesting point of departure, to look at pairings from each culture and explore how they're constructed! I'm especially intrigued by the way the seme/uke dynamic stays the same in the doujinshi but the power relationships seem to shift quite often in the Western fanfics. There seems to be more enjoyment of deliberately tilting the power differential in Western fic. I'm also fascinated by the doujinshi ignoring what the fanfic take as a mandatory moment in canon to explore (I assume it's the flashback scene of James bullying Snape?) I wonder if in part that's because bullying is more likely to be taken for granted in Japan and perhaps the event seen as less deeply traumatizing to Snape...but here I'm on thin ice and speculation.

Anyway--very interesting!