Going to lock this up.
But first, let me tell you guys what I've told our team about review scores:
If your game doesn't have massive production values expect to lose 1 point.
If you have UI issues or lack some mainstream content (good tutorial, long campaign) expect to lose another point.
If your game doesn't have MP you're going to lose 1 point.
If your game is unstable, you're going to lose another 1 to 3 points depending on how bad it is.
If your game is bad, well, all betas are off.
Now, I'll say that 4/10 from Gamespot might have been over the top but look at the TEXT and not the score. It seems pretty reasonable to me based on what he experienced.
I know the reviewer. He's a good guy. He's a good reviewer.