2 seems way ahead in storyline( well 3 is great nevertheless, but you are mainly sticking to the story, not doing extreme things -MOSTLY)
Just... if AC3 was the last you played, going to 1 is going to be REALLY HARD depending moving around.
I don't get, how someone can be so immature/childish, even after so many years :D
Played 3, downloaded 2 for now, and gonna play all the series.
Not going for 1 tho, even going from 3(actually 5th) to 2nd was quite big, comparing graphics/gameplay