1 is in a class of its own, I didn't feel right comparing it to the others, it feels different in a way. If I HAD to put it in the list, either before or after revelations. Probably before, I really liked AC1.
I really didn't like Brotherhood. I like everything it tried to add, but revelations refined everything it added and made it way more useable. Brotherhood just felt like a way to roll out multiplayer for me. I don't understand why people seem to have such a raging hard on over it. --- BF3 Platoon for Skid Loader lovers - The Skid Loader Club: http://battlelog.battlefield.com/bf3/platoon/2832655241192792365/
Not that Revelations was terrible, but I just didn't enjoy it. I had more fun with AC1 back when it came out. I'm sure it's crap to play now though. --- Playing - AC3, ZOE HD, X-COM, Dishonored, Borderlands 2, Doom 3 BFG, Tekken Tag 2, BF3, Darksiders 2, Sleeping Dogs, The Walking Dead, Lollipop Chainsaw, MAA