Are new IIMs really worth it?

I might be wrong here but analysed the alumni profiles from a few bschools - IIMU, IIMRai, TAPMI, GIM Goa on linkedin, particularly from the years 2012-2015 such that each person has around 10 years of experience after MBA. Interestingly, I found out that initially some people might have started in sales roles but eventually after 10 years they were all in the same or similar positions. I might even say I found people from Tapmi at a better position (not promoting any bschool here)

Considering how hard it is to get into new IIMs, I wonder if the IIM tag really makes a difference.