The first Crysis was tailored directly towards the glorious PC master race. So the fact the sequel pared back the hardware demands in favour of something that would run on a console did not go down well.
The game's reception reflects this, and has perhaps led to a reassessment of the decision, Crytek boss Cevat Yerli telling Gamasutra "Crysis 1's intention was, if I were to play it three years later, it looks great. And it does, actually, it fulfilled that. But it made it difficult for entry-level players. So with Crysis 2, we took a different direction, and it backfired a little bit."
Next week's DX11 upgrade, for instance, is being viewed by Crytek as an olive branch of sorts, Yerli adding "This is much more like a gift to the high-end community. And I think gamers will appreciate that. It lifts up Crysis 2 and gives a sneak peak of how PC gaming will evolve in the future, if you support a high-end preference."