In comparison Dragon Age II has 103 minutes of cutscenes while Killzone 3 has 70 minutes.
Of course, having a massive amount of cutscene fodder isn’t necessarily a good thing. Metal Gear Solid 4 forced players to twiddle their fingers with an obscenely opening cutscene. Hopefully the cutscenes in Yakuza are skippable, because six hours is a lot to ask a gamer who wants to play the game.