GY-DHNE-GWD are small places when compared with GTL, Adoni, MALM, RC. In addition, KRNT has better road transport service to Hyd. And therefore less number of people prefer trains from KRNT( in night times ) because trains have very odd timings in KRNT.
KSK express covers major places like BAY, HPT, GDG, UBL, DVG, Koppal, Haveri and Tumkur and also acts as a over night express to SBC from UBL which is why it has good patronisation.