I don't think anyone can honestly say they thought the voice acting was "good".
But personally, i like to think it was done poorly on purpose - To counter the realism of the gameplay perhaps?
Either way, it's a nice change from the extremely serious drama-movie style story telling that we get in every other war game. (CoH..)
Always trying to give off the impression that it's some epic award winning story that we've never heard before. (Don't they know WW2 has been done to death?)
Atleast with MoW you can laugh at how the voice-over never seems to use the right accent.
But at the end of the day, who really cares? We don't pay for a game to watch the cutscenes, or to listen to the voice overs. In reality we just want them to hurry up and get on with it so we can get back to killing the enemy.