The reason why there is no real Megillah, and it’s attempt to copy the real ones is not read, should be apparent.
Nations of long ago would revel in war, fighting, combat. That was their pastime, their glory. Reading material (whether real of fake) then was only about warfare and battle. That was definitely not the Jewish way. To read these works and revel in these matters would be playing right back into the misyavnim’s hands.
We do fight as an emergency measure only, we generally accompany the other two as well, ????? and ?????. We certainly do not revel in these matters, it’s not the Yiddishe pastime, we have something else to occupy our attention – Torah and Avodah.
A cursory glance at these works show from which angle they’re coming from. Muscles, elephants, brilliant strategies, sprinkles of a few miracles etc. No, nothing of the Jewish sort. Nothing close to the real one – Megillas Esther.
The gemarah speaks about it, and all we need to know about it, with a mere few words. The big attention Gemarah affords is to the Nes of the Menorah, to show that Hashem was pleased with our actions – the Chanukas Habais.