That video did not leave me with a good first impression. I thought it was doing a pretty good job building atmosphere, I was genuinely impressed. Until the parent shooting incident happened. That scene just seemed completely ridiculous, relegating the Koreans to comic book villain status. All they needed to do was have you hear the child screaming, that would have been enough, and it's far more subtle.
Another big mistake they made was to have all the Korean soldiers masked. They don't seem human anymore, so it's just become America versus the giant evil empire. As usual.
I haven't played the game, but that left a really poor first impression, just looked like a really hamfisted attempt at creating emotion. Without that emotion they've been hyping so hard, there's nothing really seperating it from the myriad of other shooters. It may be that it gets absolutely amazing later on, but a first impression is incredibly important, and that one failed.