I would say it would both the colleges are of same profile. Thus you have to choose depending on the course. Now I would say that it would be better for you to go for CSE (AI & ML) in GNIOT NOIDA because AI and ML is the future. AI and ML is going to take up the industry in the recent decades and you will get enough scope to work on it. The employability is increasing everyday for this field and if you can coup up with very good skills then mark my words you will never be worried about getting a job or you will never get bored of the subject.

Thus if you want a real subject which is in its development days and you want to explore the exploration of a subject then AI and ML is the place you should go.

Now its your career and your decision matters the most. So I would recommend you to conduct a research by yourself and then only take any decision.

To know more about AI and ML visit the link below:

https://www.careers360.com/courses/artificial-intelligence-course

To know more about GNIOT NOIDA visit the link below:

https://www.careers360.com/colleges/greater-noida-institute-of-technology-engineering-institute-greater-noida

To know more about NIET NOIDA visit the link below:

https://www.careers360.com/colleges/noida-institute-of-engineering-and-technology-greater-noida

I hope this answer helps. All the very best for your future endeavors!