You would be missing the point of this game if you put that much stock into the quality of the voice acting, or even the story. Are you really expecting it to be even passability good? Its awful, and that's just fine by me. This game doesnt need any of that to be valid. In GTA, sure, it was great because it was such a story driven and grounded video game, but JC2 basically dumps us in a channel of islands with a parachute, a gapple hook and some guns and says 'have at it kid'.
That's it.
This game is--at its heart--a game. It's a hand full of a Jacks. A baseball, a bat and a glove. It's a set of Legos to make with it what you will. I havent even played the full game and I can tell you that it's not a video game with a narrative that's going to be compelling in any way. I honestly couldnt care less about why I'm there, or who needs liberated from some evil dictator.
I just want to grapple onto airplanes, hijack it, fly up to the highest point the game will allow, jump out, free fall at 90MPH until the last 100 feet, pull out my guns and blow a bunch of shit up underneath me while I rack up chaos points wearing my cheesy-ass leathers and slicked back hair.
That's all I expect out of this game.