A title like Dragon Train tells you the theme before it tells you anything about money. It suggests a locomotive, a dragon, or both, and that is all a name can be trusted to do. The name is not a specification and it is not a licence term. If you see it on a list, treat it as a label for a look and feel, not a statement about odds or prizes.
On this site, the subject of that label has no published figures we could verify, so nothing here gives it a return figure, a top prize, or a line count. That is deliberate. A name alone does not tell you what a session will do, and a session is not a long-run average. The average is a figure that only makes sense over a very large number of spins.