Runs great for me too.
Also, the comment that the game has "basically no graphics options" is just false. There are LOD, Texture, Shadow, and Anti-Aliasing options in addition to the standard Resolution and VSync options. There are also four NVidia GameWorks options to mess with if you have that brand of card.
Pay attention to the recommended specs if you are thinking of buying -- they actually mean something. There are probably performance issues that still need to be ironed out (in addition to the usual AMD woes), but I'm willing to bet that, for most people who own a PC with the recommended specs and an NVidia card, the game runs fine.
As usual, the internet is full of a lot of hysterics and repeaters from people that don't even own the game -- or have a sub-recommended PC and are flabbergasted that they can't run it like Asylum or City. The vast majority of articles I've seen posted simply refer to the Steam user reviews or Metacritic user reviews (and we all know how those are always 100% accurate) and NeoGAF threads.
Again, there are probably issues for many (which, hopefully are ironed out because this is a great game), but there's also a lot of bullshit. No need for hyperbole -- wait for the real articles that delve into actual testing of the game so that we get a better idea of why these problems are happening.
And from a CAG point of view -- why worry? It's only going to get cheaper. Time is your ally if you are worried about performance.