playing a game will do jack for your procedural memory, and especially muscle memory.
the real world can't be simulated until we reach matrix levels of technology and even then, why in the hell would we, you don't get any excercise parking your fat ass in front a computer.
[vader]i find your lack of imagination disturbing.[/vader]
the military train procedural all the time, but have a way harder time training situational awareness. the benefit of a system like this is that you can run different environments(day/night/location/number of civillians) with very little expense or setup of mock buildings.
that variety of scenarios helps build experience with a wide range of variables making the people better prepared for unfamiliar environments.
the main objective of this kind of sim is developing better decision making in the soldier. sightlines, field of fire, backstop, awareness of friendly forces, shoot-noshoot conditions; all these things come from experience.
running the same hogan's alley or kill room over and over with the same setup doesnt help build awareness of those factors. allowing a soldier to see through the enemy's eyes when the soldier ran from cover to cover, or through a choke point, or cleared a corner, can teach far more effectively than any verbal explanation.