These colleges are under AKTU so there might not be much differences and both are good for BTech. CSE. But there are few differences related to fee structure and placements.
1. The fee structure for NIET for BTech is approximately Rs. 4.5 Lacs to 6.5 Lacs while that of GL Bajaj is approximately Rs. 5.5 Lac.
2. NIET has secured #171 As per 2021 NIRF ranking and GL Bajaj secured #194 rank.
3. Placements- The highest package offered by NIET was INR 30 LPA for CSE and By GL Bajaj was INR 33 LPA.
Both the colleges are equally good for BTech CSE, so you can choose any.