Hideo Kojima clarified on his latest blog podcast that he's absolutely not disappointed with Metal Gear Solid 4, despite earlier reports of his dissatisfaction. He's just trying to be modest about the game. He put the blame on his words getting lost in translation as the reason why his views were taken askew. This is always the usual suspect as the Japanese language and culture doesn't always clearly come out the same when put into English words.
We won't go too far into this but in short Kojima says he doesn't like to brag; so he's downplaying his thoughts, keeping in line with Japanese humility. Whether Kojima is being too humble or not, gamers should still listen first to their own opinions on the game. We've seen the game footage over the years and listened to the news reports, and we're pretty sure we like what we see. Has a previous MGS game failed to