Yes, the controls are much slower, but that is to reflect heavy weapons,armour. There is no way with the weight you are carrying to move as fast as you could in COD4. Plus its not COD4, to what most people are trying to compare. As for the motion blur making you sick, i heard that before with other games too, especially fast-paced ones. I haven't actually noticed the blur yet, or at least it didn't give me any negative effects.