Hello, Please read in context of M.Tech Aerospace.
Before completing M.Tech I also had such question like which IIT has best placement etc.
After completing M.Tech I came to know question should not be the which IIT is best but which students are best.
Because I have seen people not getting placed in IIT Madras, IIT Kanpur also. After all these IIT’s have some placements at least (around 30–40%) if not all , every year.
IIT is same but students change, every year. Sometimes few companies change from year-to-year.
The point is, it is not which IIT is best in all IIT’s but which students are better in a particular batch in a particular IIT.
Thanks.