Interesting, yes… but I don’t think the similarity between the A&A game and Axis pact you reference is intentional. By that I mean it was a total coincidence. Taking into account all of the other errors in Pacific and previous versions, there is no way that the designers paid that much attention to detail. I bet it just looked like a logical place to split the board for them.
Yeah. I think they just split it where China ended, and that happened to be there.
Besides, 10 degrees is a large error.