Pondicherry University

Placements are pretty average. You must opt for top MBA colleges under rank 50 for lucrative career opportunities.
https://www.shiksha.com/mba/ranking/top-mba-colleges-in-india/2-2-0-0-0

The average package is around Rs.2.5 LPA, which is quite low for a MBA degree holder.

CAT exam scores are considered for the admission process. For more details, please visit this link: http://www.pondiuni.edu.in/department/department-management-studies

Chance for getting an IIM call is extremely low. Have you submitted applications for any other private institutes? If no, then you must look out for good colleges which suit your profile and apply for them. There are many good colleges which accept CAT score in the range of your score.

All of them are under the same category. PU is a central university, hence it has slightly good ROI but their brand name might be limited to Tamil Nadu, Kerala and Bangalore. But remember, PSG, TSM, SSN AND PU have equal brand name within Tamil Nadu as of top B-schools like IMI, IMT or Fore. So, choose where you want to settle. If you aim for cities like Mumbai or Delhi, then go for bigger schools than these.

Dear Vinod Kumar, the following information provides a clear picture about both institutes.
AVB -IIITM Average Package, 5.2 LPA. Highest Package, 20.0 Pondicherry university. Average Salary 5.5 L | Highest Salary 12.30 L. Therefore accordingly you can take decision. All the best.