people keep asking if assassin's creed brotherhood is assassin's creed 3 and the only answer i hear is "it's assassin's creed 2.5".
in fact everyone is wrong ACB is neither AC3 nor AC 2.5. it actually is AC2! if you watch AC2 DEV DIARIES 5 video Corey says that
AC2 ends at 1503 which is the ending of ACB. so ACB was to be included in AC2 story but ubi's guys figured out that ROME was so big, it could be the setting of one single game.
plus ACB's protagonist is ezio again and according to ubi who wants a different character and a different setting for a different game, ezio could not be the main character of another AC game.thumb|300px|right