I want the game to feel right, a game can be any degree of realism but it has to feel right, when a game like farcry 2 comes along it doesn't feel right to me, maybe it's the fact that the gun takes up too much of the screen, or the gun doesn't "feel" like it has enough recoil, or the bullets don't do enough damage, or the fact that the cars don't bounce the way they should when driving over rough terrain.
Its hard to explain but here is another example
take the pistol in halo 1, the way it waggled when you moved, the smooth melee animation where you wacked a grunt with the but of the gun, the melee felt right, the way the gun bucked when you fired it, it felt very good to hold and use. In the later halo installments the weapon became much more static, the animations became much more simple and jerky, it didn't matter that the scope had been taken away the whole weapon felt different.
in farcry 2 none of the weapons felt right, none felt good to use, the art and beauty that the halo ce pistol had is absent from the weapons in farcry 2.