JBP doesn't get more 'OWN' trains than BPL because it's the HQ, rather because the number of 'PASSING' trains is way less than that of BPL.
The trains mentioned by you, along with Durgawati are 'ONLY' trains connecting JBP with Delhi. Comparing this with BPL, it has got an own Shatabdi and Bhopal Express along with 63 OTHER TRAINS for Delhi.
If not JBP, from where could they else originate to provide JBP connectivity with Delhi?