Hi, according to your question it seems something similar. If I talk about top NIT's like NIT Trichy, MNNIT Allahabad or VNIT Nagpur then the CSE branch of these institutes gives a tough competition to CSE branch students IIT's also. Now coming on the IIT, Kharagpur's EEE branch so let me tell you EEE highest placement package from EEE branch is approx 1 Croreand the average package is approx 5 Lakhs. So overall you just see IIT Kharagpur is an IIT afterall so it will always be better than any of the NIT's in any branch.

Good Luck.