Keep MGS4 as far away from him as possible. He'll laugh his ass off at the game's story, graphics, and load times. What you have to do is get him emotionally invested in the series. Then, like a battered housewife, he'll accept anything!
Wait until MGS HD (aka the "Good Metal Gear games") comes out. Get that and let him borrow it. He'll fall in love with the series and the Kojima's style. THEN AND ONLY THEN do you let him touch MGS4. He'll actually think that having Meryl hook up with Akiba in the middle of a battlefield is good storytelling.
Make him watch MGS1 cutscenes on youtube (or get him the PS1 game).








