What is the reality behind the 1.5 crore package grabbed by IIT Roorkee student?

I am the right person to answer this question as my sister was a batchmate of the student who grabbed a 1.5 crore package offered by Microsoft Redmond. This package was offered to CSE and ECE students.

Microsoft was recruiting based on 2 profiles: Microsoft (Software) India and Microsoft Redmond USA

For Microsoft India, CTC offered was 39 Lakhs and the in-hand salary was 1 lakh per month which is similar to other IT companies.

For Microsoft Redmond, the CTC was 1.5 crore while the in hand was around 45 Lakhs. 

Keeping in mind the PPP of USA vs India, the approximate value is 15 LPA. Do you think this is an extraordinary package, considering all the factors I have mentioned? Many companies visiting the campus even offer packages ranging between 20-25 LPA. In fact, an Indian company AppDynamics had offered a package of Rs.45 lakhs with 30 lakhs in hand. Many such offers by Indian companies are better than US companies. It’s just that the international offers are extremely hyped and not many go into details of the monetary value.