But one thing is very clear that controllers have no idea about the premium ness of a train & they give priority only based on the trains name...For eg Kanchankanya Exp is the 2nd only train after Saraighat to have a premium Tatkal of 96 berths to be effective from Nov last year So a Sleeper ticket in 13149 is actually costlier than a 3A berth in Garib Rath but during the past 3 months there had been many instances of GR overtaking KK & reaching NJP before... So the controllers have no idea of what's going on inside RB & oflet Premium trains have been assigned more. Priority.