So, you're questioning credibility of RTI Data just because you didn't like the position of Sasaram in comparison to Dehri On Sone ??
You do realise there are great many things beyond what you grasp from seeing the charts, don't you ?? That too of Mahabodhi Express only ?? Quite narrow field of view don't you think ?
In Konark Express you might find more bookings from Pune or Kalyan than Mumbai CSMT. So does that mean Pune or Kalyan are bigger than Mumbai CSMT ??