Her and the other players' gender was the key element of this story, not necessarily the violence. More on the topic HERE:
The video makes Lambert look like a monster because she's acting like a monster. It isn't camera tricks or selective editing; she did those things and it's not the camera's fault she did.
If she were male, do we really believe the author (and other critics) would have referred to her as a "monster," or as an overly aggressive athlete who wanted to win? It's not that the violence is insignificant. Rather, the women's gender makes the violence important and extends its importance.