it was heavier, there was a huge shearing force on the bolts and people already break bolts onto frames enough. the bash would have not have been able to take lateral loads aswell as the usual design as it would be ripped off. also there was less clearance with that bash. aswell as all that, going to bash usually is pretty horrific on walls, even with the bash plate being pretty big, the bt one had 2 tiny surfce areas that would rape walls.