2016 has not seen any huge grossers except Salman Khan's Sultan. Most of the films also struglled for big initials thus despite the excellent hold in 2nd week, collections are low.
Sultan tops the list of highest 2nd Friday collection of 2016. Sultan was a mid-week release and 2nd Friday was its 10th day which makes it even more impressive. Shivaay and Ae Dil Hai Mushkil have taken the 2nd and 3rd position beating Airlift, Housefull 3, Rustom and MS Dhoni despite the fact that first week was lower than all above films.
Normally the films with solid content hold better in the second week. Though the Diwali releases may have some holiday advantage.