As was Titan... don't kid yourself if ya think blizzard simply cancelled an MMO (thier bread and butter) because one of thier partners was doing a similar styled game, many of the aspects in Destiny (the way its modeled) are taken directly from halo, while many of its gameplay aspects are uncanny to WoW. If they weren't partners, blizzard would own this game from all the idea concepts destiny is using atm :p