Last 20 % of sleeper class fares are equivalent to 2 A.C. fares.So mostly Sleeper class booking only up to 60% .
Similarly mostly 3ac and 2ac booked up to 60 % in Suvitha.
IR operates Suvitha with 50% to 60 % occupancy.Like Tamilnadu theatre owners who operates theatre's with 20% to 30% occupancy with huge fares.