Do you have the link to the latest earnings data? At least up till 2014, he is not wrong.
Earnings for 2014 -
click here SCR topped the earnings for 2014 at Rs.1,23,000 crores, with ECoR at 1,20,000 crores. SECR's earnings in the same period were around Rs.90,000 crore and was in eighth place. Even if SECR's freight revenue has increased in these 3 years, 16.7% of IR's total earnings seems very inaccurate. There were 7 zones with more earnings than SECR at that time. Highly unlikely that all their revenues would become so low in 3 years.