It's easy to get good at the game.
Driving the real track is another story.
On the comparison of real life to the game, one day in an NSX at Laguna is hardly a comparison.
Give the guy a week and the lap times would be very close. ( Give me a week )
They don't have a 914-6 in the game, but my real world lap times are very close to a Miata, Elise or the RUF 'Boxster' in the video game at Sears and Laguna.
Playing GT4 was a great way for me to learn and memorize both tracks.
KT