Not exactly sure what your saying, but I generally base these designs on all available versions: 1e, 3e, 4e, & 5e. I typically have not referenced 2e material as it didn't typically stat gods and their ilk as far as I know.hmnn. consistent with the 3rd edition thinking process of deities and demigods. inconsistent with the 1e thinking process of deities and demigods, and inconsistent with the 5e process.
I have no interest in converting a specific stat. I look at the designs holistically, not on an individual ability or stat basis. For example, with the Arch-Devils I ranked all 1e Arch-Devils, all 3e Arch-Devils, all 3.5 Arch-Devils, and all 4e Arch-Devils relative to each other within their system. Then used that information to develop an average relative attribute for the 5e version. This set the initial ability scores, AC, and CR. I then modified them as needed to fit my concept of each Arch-Devil (very minor tweaks so far). Then I would look at resistances and abilites common, or dominate in all versions and add those. Then I would add abilities needed for epic combats, either existing or new as needed.While the numbers look nice, i dunno. How would you convert an AD&D character with a -23 Armor Class? or a character with a THAC0 of -26?
I assume you are talking about this in general as I have not converted any characters (NPCs). Personally I don't like it as a rule, but I would look at it on a case by case basis. I generally make epic monsters stronger because they always seem weak to me. I am not nearly as familiar with NPCsI notice as characters and monsters get converted, there tends to be an inflation of monsters and a deflation of characters. Some people agree with it. Some disagree. Where do you stand?