I seriously doubt many of those figures. I went to places like Dewsbury Doncaster, Widnes ,Halifax.Each time there was a sizable Oldham following.Sometimes equal to if not greater than home support.At the very least 40% of the total
I would be safe in considering Oldham would be in the top 3 for away supporting.
For the home matches with the exception of Widnes and Salford away support has been sparse.
Therefore the likelihood of say Sheffield or a similar club drastically increasing Doncasters attendance is a non starter.
A random look on YouTube at various matches gives the game away.
Just not buying this nonsense.