I'd say it'll defiantely be positive. I think the media will think twice before calling any pro-wrestler a steroid infested meathead. Maybe now that they saw a tiny glimpse of what it really is to be a wrestler, they'll realize just how much these guys give to us in the ring.
In the film, Mickey Rourke was still an independant wrestler. He didn't even work for WWE and his schedule was still so tough and he was still so burned out. I remember his last match was broadcasted in ROH, but I'm pretty sure the rest was just independant stuff.
Maybe the blind media will finally realize how tough it is to be a wrestler and that it's not just some "fake sport."
I encourage any wrestling fan to see it.