In my experience, you didn't miss anything. You know what that $12 savings gets you? They send you the game but the case is damaged and the disc has popped out to slide around and get scratched (happened to me with Twisted Metal) or you get the wrong game entirely (happened to me with Mass Effect 3). The $12 savings on each game wasn't worth the frustration of having to deal with customer service on both orders.
I am hoping Prototype 2 will be good. If they did the game right, this will seriously be one of my most played games of 2012. Currently playing Tales of Graces. That game renewed my faith in JRPGs. May wait on picking up Prototype 2 until reviews start coming in and/or a few weeks after release when the price drop occurs.