>GTA
>realistic

Totally.

Ace Attorney is more realistic than GTA has ever tried to be.

That would make them interested in being a soldier, but would not automatically make them soldiers.

People will not be, like, "oh wow, you played CoD? Forget the training dude, just pick a rifle and fight in the frontlines for your country!". They still need to prove themselves as much as anyone else, and might fail at it as much as anyone else. Their military aptitude is not higher or lower by playing any kind of game. At best, "AK-74" rings a bell to them and not to others, and that is all.