I'd hardly say it doesn't depict WWII at all, and how would you know what the reviewers judge when grading a game. They've seen hundreds and they can recognize a gem when they see one.
I realize that it is not even remotley close to a 100% realistic game but think of they gameplay issues if it was. It would be damn near unplayable if you were seriously wounded or killed by one shot (at least with some of the missions they give ie: Omaha) How would you like to reload the map 100's of times after you've been raked with machinegun fire as the ramp drops?
I agree with you about snipers on Omaha, and think that a patch should be added with class limits, but if it frustrates you that much move on to a different map.
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"It is by the goodness of God that in our country we have those three unspeakably precious things: freedom of speech, freedom of conscience, and the prudence never to practice either of them." - Mark Twain