More inputs to understand things to be translated.
You don't just get the text pieces to be translated, at the same time, you are told what arguments they are taking, what are those arguments. And predicated translation issues from the programmers.
More flexible to choose among editing tools.
You can just use plain text editors to accomplish your work, in case you don't like one, choose another. The plain xml structure also makes it very easy for customized XML editors to be handful assisting your work.
