an i7 is overpriced and pretty much similar to the phenom II series in terms of gaming (although they do have some major power going for them, but the extra cost of these high end parts is silly), but that's for another thread
Basically the specs used are pretty outdated by todays standards, so if the game can run at 60fps, it shows that this game will run well for anybody who could even load crysis 1.
It's a nice tradeoff of making the maps smaller for the console version and also some optimisations to the engine. Sure, i'd love a balls kickingly awesome sequel with loads of different terrains and environments to show the world impact of the invasion and environmental deformation, physics up the arse and amazingly intelligent AI, but that's what you get for fantasising about the sequel to the most demanding pc game of all time