It is difficult to compare colleges. Both are unique in their own way. No college can fulfill all your expectations.
Some of the distinctive features of the institutes are as follows.
Placements:
Faculty:
Environment and Structure:
I know someone who used to be a student of MAIT and she has told me that it has a better record of placements than that of G.B. Pant.
Yes, GB Pant University does offer lateral entry into B.Tech Agricultural, Civil, Computer Engineering, ECE, Electrical, IT, Industrial & Production and Mechanical.
As per the official university website, the admissions for lateral entry into B.Tech is based on diploma merit. The counseling for the admissions is conducted by Uttarakhand Technical University Dehradun.
You need to regularly visit the website of Uttarakhand Technical University for updates on the B.Tech Lateral Admissions.