OMAIGODD that viedo looks awfull! I buyded this new sistem to plai this game on MAXSETINGS and naow it turns out it SUCKS! How coud thei trick us to beleive it was not crap!!!
On a serious note, and not breaking NDA, just speaking of beta's in general.
The beta is 2 weeks old now, god knows how long they ran in Alpha. A beta usually backtrack to a point where the Alpha was playable to get feedback that wasn't given during the alpha, beta's usually release a new beta build at least once a week. The gameplay you are seeing in the video is most likely based on a late Alpha build and should really not be taken as "the finished product".
Even SWTOR changed quite alot from beta to release, only problem with that beta was they didn't really listen to feedback and treated all of the feedback as whining.