Fei-Hung on 23 January 2010
metal gear is a game many ps fans have been dying to play on a next gen system, so on release it sold well.
gow3 may not have as big as a fan base as mgs, but is more accessible than mgs will probably have twice as large as a user base to sell it to.
can't remember too well, but i dont think mgs4 was advertised much (or any ps3 game at that moment in time) compared to how sony may advertise gow3 on release.
i wouldnt be surprised if gow3 does similar numbers to mgs4 or maybe even outsells it.
