User blog comment:Master Sima Yi/Assassinews 10-05'12 — World Gameplay Premiere/@comment-1888015-20120511183711/@comment-4950493-20120511210752

Those are some good points Slate, and I'm sure Ubisoft will fix them, after all, it's only pre-alpha game footage and they're still working on it. But as for the first point, I'm pretty sure they did that to synch with the music.