If ER is a bengal based zone then ECR is a hardcore bihari zone. I have seen this ER bashing strongly among Bhagalpuriya RFs group.
You are bloody lucky to even have multiple dedicated trains. My home city is than 2x times your Bhagalpur. Gdp wise kitna bada hoga yeh hisab hi nahi hai aajtak ek train nahi diya ECR ne. Aajtak Gaya GR ko DHN extend nahi kar payi ECR. Jab kahi vi ticket book karo RLWL ka quota laga ho tab inko samjh me ayega dedicated trains kitni important hai chahe wo ICF ya LHB