GR: "While the Assassin's Creed III video featured below has been making the rounds the past week, it never stays long enough for someone to actually watch it before Ubisoft yanks the plug. I'm guessing it was shown well in advance of when they have it planned?"
Also, how do you know what this multiplayer is like? Have you played it? No, you haven't. For all you know the gameplay mechanics could be totally different and they could've introduced tons of new game modes. Also, all the changes in singleplayer will be incorporated into the multiplayer. You can't pass judgement on it at this point in time.
And Assassins Creed has been, and always will be, a story focused game. Multiplayer is just an extra.