The guys at Popular Mechanics stumbled upon an interested question: Chinese or Pizza? Another question they asked themselves is how realistic the guns in modern games are? The answer is a mere ‘so-so’. Some weapons are realistic but others are not. Developers walk a fine line between realism and fun, with fun beating out the former whenever conflicts are present. The reason is crystal clear, we play games for fun, not because of how real they are. Feel free to hit their website if you wish to read more.
Shooting for Realism: How Accurate are Video-Game Weapons? [popularmechanics]