I haven't played it, but based on what I've seen and read, it misses the whole combat sim mark in the same way that your typical racing sim misses its mark. Combat, at least in entertainment form, should be an instinctual thing. So the gun should have as little presence as possible, and controls should allow a full range of combat abilities while still being natural, or else it does a poor job of mimicking human abilities. Here they seem to have added complexity where ever possible, and that doesn't make sense. Again, I haven't played it so this may change when I actually do, but it seems like Ghost Recon does a much better job balancing human limitations and a pure combat experience.