The order should be 

MNNIT A CS> NSIT CS>DTU CS

MNNIT A EC>NSIT EC> DTU EC

Reason

1. At DTU & NSIT, a huge quota is been given to the Delhi residents. So it cuts down that student over 1.5 lac are enrolling it.While at MNNIT you wouldn't find a single student above 1Lac.

2. Our alma mater is far more rich, wide and loyal towards their juniors.

Ps: if you are thinking of location advantage then it works only for those who want to work under a very new/baby startups not for those who work at MNC's. As MNC's have ample resources to travel from Delhi to Allahabad.