I was thinking, in an interview some MS person said they have to play all games to completion every side quest etc to make sure it works, it makes me wonder if that's why CoD is taking so long to take up because they might have to play to max prestige and get all camo's etc which obviously takes a shit load of time.
Welp, there goes my glimmer of hope for Destiny being backwards compatible. I already have the game on the Xbox One but the community is different on the 360.