How is the faculty at the IIT Delhi compared to that of the IIT Bombay?

I have friends in both institutes and from what I have heard, the IIIT Delhi faculty is quite arrogant and has no interest in teaching. The professors at IIT Delhi were very approachable during internships and expressed their willingness to work with the students and help them find their thought processes. On the other hand, IIIT Delhi professors would mock you if you were unable to answer a particular question.

A friend shared an incident at IIT Delhi when one of the professors committed an unintentional mistake and retook his interview to apologize. Your Ph.D. depends a lot on the kind of professors you work under and I will never recommend you to do a Ph.D. under such arrogant professors