People prefer ss less, as compared to them, as the train runs late and it doesn't touches Gkp Siwan, which has huge demand.. Although passengers prefer it for Ald, Bsb and Bui, yet you can get seats if you book so fast. Try tomorrow for Sampoorna Kranti, as one rake is running on time and the same rake will depart day after tomorrow.. It will definately reach before VS and other SF/Exp trains in the route..