I think it's awesome that a gamer has actually gone from racing games to the real thing.
I truly believe that playing games has honed his skills in what to expect from some basic driving physics.
At the same time, however, that doesn't mean that a potential expert marksman will be ready to fire an automatic weapon immediately.
For those who don't play games, a game can teach the concept of recoil, the idea of burst fire vs. full auto, bullet drop, bullet delay/realistic target leading (Frontlines' delays may be strikingly realistic), sweeping corners like the SWAT team, etc.
But they will never teach you how to actually deal with recoil or the adrenaline rush of active combat (I wonder if basic training even truly prepares you for that).
This may sound funny, but the spread patterns in Counterstrike are actually very likely wider than in real life.
With the exception of a real AK-47 that actually limits you to a 2 round burst followed up by single shots.