I would also split the rounds 7-3 in favor of the North; the actual rounds played splits are 6.5-3.5 in favor of the North, which is likely due primarily to the availability of carts at the North. Paradoxically, I think the routing of the North is more walker-friendly, as the first ten holes at the Old have several long walks back from green to tee (2,5,6,7,10).