Well, obviously it is similar, how much - I don't know how to describe it better than the picture above.
That's not the point. The important thing is how similar it is to an original one step shroud. I've not seen one with my own eyes yet, but from pictures I'd say - good enough.
So if you are the prop maker for ESB and have a MPP with a 2 step shroud ... my bet is you'll just make the prop with the unmodified 2 step shroud and nobody would notice or care that it is not a single step. But let's say somebody said "No, that has to be one step!" - then if you build it up similarly to what I did - why would not just use it , but instead cast it in steel and then use the casting?