First and the foremost the brand name. As it is an IIM and has got very nice placement record. Other factor is i wanted to pursue a career in marketing and IIM Raipur is well known for it. It came under CAP process and gd was not there. PI is an easy one just you should know your profile better to get in. Also make sure you are ready for the rigour if you are entering into an IIM.

No GD and WAT. Only PI was conducted. Initially your profile is selected based upon the CAT score and you recieve a call. Then final offer is given on the basis of how diverse your profile is. Score constitute of your PI and CAT score as well as your academic and professional background.