Walk off seem to be when the stage just goes offscreen instant killing you, people don't like that because you have no chance of recovery but I find it stupid because that shouldn't be an issue stay away from the edge and don't fall into the guys trap of a Back grab
Weird. I mean, I'm glad they really want a game they care about to be competitive, but they sure have to make a bunch of silly rules to do it lol. That's why SB4 is gonna have a final Destination for every stage.