I dont think you will find many outward differences between the two. I would suspect the difference to be in the quill screw pitch and the depth dial.
Any more than that would only add to the production cost.
I actually have an MD200 quill and screw in mine as it turns the "correct" way from my perspective. I could have probably used the whole tailstock, but just swapping the guts was easier and works fine.
ETA: I just went back and looked at a post I made about the tailstock I made last year. Its likely you do not even have a graduated handwheel on your tailstock. Buy you could get one by swapping out the quill and screw from an MD200, like I did.
Half way through this post it where I talk about this.
I have lusted after machine tools since 9th grade shop when I made a working cannon, and much to my shop teachers dismay set off all of the car alarms in the neighborhood with it outside of the shop doors in the faculty parking lot. He thought this was impossible for a kid like me, but I had...
www.hobby-machinist.com
I swapped out the quill/screw from that machine and sold it complete with no trouble, as most people don't actually care how the handwheel turns on a small machine like this. Its really only once you get into a shop and start working on a wide variety of machines that this will be noticed.
Watchmakers lathes (Like the MD200) often have unique features that differ from the norm.