User blog comment:Master Sima Yi/Assassinews 08-10-'13 — Freedom Cry trailer released/@comment-4999424-20131008195859/@comment-6517-20131009111845

Actually, the ACR trailer was not canon. The ACR intro video is canon; the fact that the intro video and the ACR trailer are almost exactly the same is incidental.

N.B. The intro video and the trailer differ in a number of small, but important ways; most strikingly is the bruising on Ezio's face during the hanging sequence. One is canon (the intro video) the other is not (the trailer).