I think they mean something along the lines of Edward Elric from the first anime, and Edward Elric from Brotherhood/manga. Essentially the same character, from the same universe, but slightly different in how their personalities develop and how their story goes.

That's actually a question I'm going to follow up on with them and ask if that's cool? I know anime and manga can very wildly enough for them to might as well be two characters. Actually Train, Hao, and Cut Man (if you count Ruby Spears) all fall under that.

I don't plan to do it myself but I'm just backing them up.