I didn't bother with the video, but I'm sure the overall score at the bottom reflects the overall review. Overall he had 6 positive points, and 3 negatives, anyone of which could sink a game for anybody (I'm liking the story so far...not the greatest, but not the worst by any means. I'm not done with it, so maybe I'll change my mind, who knows).The video in the link was fairly critical, while he was very positive on a number of things, it was very critical of other parts of the game.
^ This seems to be the largest factor I've seen in reviews...people who really liked the first, with a more "linear" story line seemed to really detest the story (or the way it was presented) in X.First was far more linear story driven.
Obviously, not everybody is going to like every game. I'm the kind of person who, for example, loves Deus Ex, but finds the linear-ish, scenario/area (vs. open world) presentation to be a bit stifling/boring. I want to wander around!