What is in DHN BKSC except that fire that's why it is slow isn't it, similarly Chunar chopan is slow due to gradients. The discussion is about slow speeds that it whatever X Y Z maybe the factor so don't enlighten me about why I made comparison.
The problem here with some (maybe be you too) is that this train got re-routed once a week via RNQ-CPU and I am pretty sure there will be no CRY here if both days it got diverted via LAD-DOS-DDU. There was never discussion...
more... about BRKA losing train, here in few people celebrated and happy about the diversion via Lohardaga but their joy not lasted long when they heard one day diversion via CPU and started bashing the route as in this train now taking more travel time.
The point is if it is diverted it is not running empty and just the route is slow due to geographical constraints so that does not means a RAJDHANI class train not go through that route. I am waiting for frequency rise soon of this train. Don't expect any other reply from me here, I had stated all my points .