To add to how complex Perez's run was, there was a reason it had to be Diana to contain the Demon Plague. But, we don't find that out until much later in the run with the use of some classic Greek mythology that ties into Diana's origins so perfectly that you'd think Marston would have had it in mind when he created her... Except that he never brought it up, and didn't study the myths on the level that Perez did. That was one of the most important things Perez did to prepare to write Wonder Woman, really study the mythology in depth.