TNA used to push things a bit further than WWE. Like I distinctly remember several Raven matches where he got his forehead sliced open with a pizza cutter, and one with Sean Waltman where Waltman used a staple gun on him. Also Abyss and Sabu had a barbed wire match, etc.
But still, not nearly on the level of what Ian Rotten and co do. Also some fans seem to forget that ECW wasn't JUST about hardcore and blood.