A lot of this just has to do with the perspective of the photos -- real life vs a model. In real life the photos are typically from ground level. And since trains are big, the photos are far away - meaning small items on them disappear to a degree. Further there are 2 sides to them -- and from what I can gather -- only one side has the irons... meaning that many photos just do not show them or show them partially. The effect again is small items go away in the view... they become less prevalent.
Then move to the model's photo-- it's an above shot and all or likely all the the irons are there in the photo... this concentrates them in the view and they become more prevalent to the viewer.
To me at least... they look fine and on at least some real ones the irons are as represented here on their model.
