In my opinion, the three documentaries complement each other (This, Rise and Fall and Forever Hardcore). The value of this particular doc is that started production in 2001 and have interviews with deceased wrestlers like Johnny Grunge and Rocco Rock, plus other players that weren't in the other two.
But yeah, it's basically the same. Given that is the most recent, it's sad to see how broken Axl Rotten and Balls Mahoney are. And also they cover that horrible, horrible Extreme Reunion show.