EpicEmu has a fix for this which will be released after more testing, you can read up on the changes on the forums, you may need to sign up to read it:
https://epicemu.com/forum/ac-new-dam...ing-code-tests
The graphs show how the new code will reduce damage based on armor, so a full plate wearer will take less damage than a chain -> leather -> cloth -> etc. It factors in for the levels automatically and shifts the chance to miss making mobs chance to hit YOU scale with its level rather than be a flat % like most servers use now.