The South has many more SCs in Latin America than the North has in Canada. Expansion in the midwest is biased towards the south since Tennessee, Missouri, Chicago, Milwaukee, Mineanapolis, and Minatoba are all adjacent in contrast to Ohio which is only adjacent to Michigan, Ontario, Montreal, and Quebec.

The South also seems to get a chaotic advantage from Missouri to Richmond since Chicago, Missouri, Tennessee, and Richmond all border Kentucky. Only Indianapolis, Ohio, and West Virginia border Kentucky for the North.

The naval situation is a little biased too since Cape May borders D.C. Once the South controls it, it can more easily flank the Richmond/D.C. border than the North. East Coast borders 4 SCs, but it doesn't border Richmond. The Caribbean also offers 4 SCs relatively closer to the mid-Atlantic. The North, in contrast, has to go to Nova Scotia, Greenland, Ungava, and Anchorage.

Even if the North moves its fleets all the way down around California and into Latin America to grab SCs, the fact is it's a lot faster for the South to bring its fleets back into the fight after capturing the Caribbean. It can also march some armies across land to take the Pacific SCs away faster than the North can catch up. Ohio at best is 6 spaces away from Vancouver, and 7 spaces away from Washington and Oregon. Tennessee is 4 spaces away from Chihuahua and 5 spaces away from San Diego.

I'm just not a very big fan of this map now. It seems interesting, but when you look at it closer, it's not that good.