It's true that IIIT Hyderabad students secure better packages than top IIT students. In fact, the average package of IITs for instance IIT Bombay is INR 23.26 LA whereas that of IIIT Hyderabad is INR 32 LPA. There are a number of factors that have resulted in this difference in packages.
In a refuted claim, IIT-Madras's Director, Bhaskar Ramamurthi states that ‘if we compare similar cohorts and discipline-wise median salaries, IIT graduates are likely to have higher median salaries’.