Both are the same level colleges. As per the analyzing report of Careers360 GH Patel College of Engineering and Technology, Anand AAA rating which means above average. This rating is based on the research of the colleges on various parameter like placement, Faculty & Industry Exposure etc. You can check the colleges placement with the given below links.

https://ahduni.edu.in/seas/assets/content_images/SEAS-Research%20Brochure.pdf

http://www.gcet.ac.in/placement.php

You can also check the genuine reviews of the colleges with the given below links.

https://engineering.careers360.com/colleges/gh-patel-college-of-engineering-and-technology-anand

https://ahduni.edu.in/seas/research

Good Luck!