this is the most stupid statement I've ever read on all the forums I've ever ever visited.
Unless you design a 1500 points list to the task of fitting under the baneblades one pie-plate and demolisher cannon and both of them hit and you wound everything there is no way in hell you can do that.
most things the baneblade can do a squadron of 3 leman russ can do as well and is overall harder to kill (no chain reaction!)