Too long. She should have her stuff memorized or not make it painfully obvious she is reading from the papers in her hands and looking down all the time when she is on camera.
She reads things much more smoothly when she is not on camera and just showing game play video. A history of the Diablo franchise is unnecessary as are the spoilers.
So basically, if she condensed it, took out the unnecessary stuff and memorized her on camera spiel I think it'd be a pretty good video review.