Students at IIM-A are similar to those at SP Jain, NMIMS, FMS, and JBIMS. Aptitude and intelligence are roughly comparable. IIM-A students do not have to compete as hard for placements, so they are less concerned, whereas students from other colleges are constantly concerned about placements.
You'll notice that students from other colleges perform better in competitions than IIM-A because they are generally more hardworking during MBA because the struggle is greater for them. However, because of the brand name, IIM-A students receive far more exposure than students from any other college in India, which benefits students greatly in their personal development.
Although each one of these institutes is a quite prestigious business school in India, IIM Ahmedabad is a legacy. That’s right, there is no reason to defame other colleges but have a look at some insights to know why IIM A students stand apart from most top b-schools.
JP Morgan is known to offer front-end roles at only IIM-A/B/C. Similarly, McKinsey and Co. are also known to visit only A/B/C for exclusive campus recruitment.
All in all, IIM-A students are not much different from students of SP Jain, NMIMS, FMS, or JBIMS. Aptitude level and intelligence can be much more or less similar. However, what makes IIM A students lucky is they don't have to struggle much for placements. In addition, IIM-A students get better recognition worldwide which helps in overall personality development.