I just booted BO2 and joined 2 other friends. We usually will warm up in CT a couple of games before moving on to Core.
CT lobbies are obviously messed up rite now, cause it will start searching for the 18 slot ground war TD games. Most usually it ends up in an error message, but occasionally it will launch, but always on carrier.
The big Twilight Zone kicker is- It showed Friggin' ARRAY from BO1 for map selection once. This showed for me and one other friend in the lobby. And of course nobody really believes us.
Ha! Oh well. The Array map was definitely there. And CT is def screwed up. Have Fun.