In all my years of shooting, both competitively and not, I have never seen a weapon recoil like what is in the beta video (and that includes a wide range from the Ultra Light Arms .300 Win Mag. Hunting rifle to the SAW). There should be a random deviation from the main point of the first shot (side, below, up, at an angle, etc.), not a constant pitch up. In addition, the rifle staying "pointed up" after the shot is, to quote Monty Python, "silly".
Sometimes I think people believe that if something is relatively easy, it must not be realistic.
*EDIT* Just to reiterate, I am not referring to full auto firing, but rather the recoil effects in the beta video after each shot has been fired.