Just throwing this out there:
A friend and I decided to test out the combat log on the nests (upper and lower). We discovered the first nest (the one that spawns first) is Y=~70 and X=~65 (Did this with the feathers and range finder after a Ji-Kun kill) meaning the center of the room is ~135 yards away from the first nest at a ~90 degree angle (Roughly). However, the combat log doesn't register anything being done on that nest. The combat log is stated to pick up 200 yards, but the nest is 135 yards roughly.
So, that means that 1. World of Logs is incorrect to check on that fight. 2. Could be a great explanation on how Blizzard is terrible at X-Axis fights and the "pathing" for pets is broken for this reason. Something in that room is not right obviously.
Found this interesting and thought I'd share to see what everyone else thinks.