Now for something REALLY nuts.
I do similar scoring systems for roller coasters and classic carousels in addition to steam railroads, and I have a master spreadsheet that combines all three scores along with some basic scores for weather. The image of the master Attraction Rankings spreadsheet attached is filtered to show only locations that have a score from the Steam Railroad Rankings spreadsheet.
Also, the reason why the two Disney Parks on the list are ranked higher despite having lower scores is because its ranked based on the net scores for all locations within the same complex (like a theme park resort). The scores for the other locations within those Disney Resorts aren't shown because they have no steam railroad scores to display. Very, very few locations on the list are in complexes with more than one location and the two Disney Parks among those rarities.
Lastly, just in case one of our hot wives or gfs is reading this and wondering why the parks in Universal Orlando Resort (also a rare multi-park resort) can't be seen (it has a steam train, too, right?), it's because their Hogwarts Express train is a well-themed spectacular fake and is technically a funicular.