No, you're right Pat, not every PS3 exclusive is worth a damn, I'm perfectly aware of that. Let's drop the fanboy thing before we get into this, eh?
However (and I realise this is a silly thread to get into this) Yakuza has awesome combat that takes time (more than just a demo) to learn properly, especially with upgradeable moves etc. Past that there's an insanely deep world to get involved with. That demo is like 1/9000000 of the game, and I could actually forgive you for forming that opinion if you just played the demo.
(And BL, think you're thinking of something else... Yakuza's dialogue is pretty funny most of the time... and not in a good way. Fighting is awesome though.)