Pune

Well in every aspect, RIIM Pune is a better choice for PGDM and MBA than GBS Kolkata. *RIIM Pune average package is around 6 lacs and the highest is above 12 lacs. *Placements are better, ROI is best of RIIM Pune
*Educational foreign trips, certifications, training programs, scholarships are also provided. *provides Dual specialisation. *Limited Seats Intake
*Unlimited chances to all the students for the placement
*12 + International University Partnerships
*180 + Internship and Placement Partner Companies
*Location wise, climate, job opportunities wise, lifestyle, etc. Pune location is best in comparison to Kolkata. In overall terms like fees, placements, better ROI, faculty members, opportunities, exposures, RIIM Pune is ahead of GBS Kolkata.

See, Firstly you need to Understand that MIT-WPU Now-a state private deemed university. So, the procedure is kinda different from others (As far as Ive Experienced). Firstly, this means that They do not participate into CAP rounds now.
Secondly, to apply you need to go to their website and apply under the option. You would be asked to enter your CET and JEE Mains marks and if JEE and MHT-CET is considered you have to score atleast 90-95 percentile above to get into it, then only you can expect top Branches. After the registration closes,they will release the Merit list. You will then be called as per your merit number serially for seat allotment. so, higher your score, higher are your chances for getting a seat of your desired branch.
I Hope this information is helpful to you:)
GOOD LUCK!