I disagree because I have redone the lod on Hoover Dam (thanks to zilav) and also used normal armor for the NPCs, so the limit are clearly not the NPC armor (but yes Obsidians Legion armor could be optimized a lot too, which I actually did for the armorfixes for the body replacer I have on nexus). Skyrim as all TES games has a different armor concept as FO3 & NV. Here are bodyslots better used. Nice channel to watch if you want to know how maxed NPCs look like in Skyrim. But yes sorry XBOX and PS3 nothing for you.
https://www.youtube.com/watch?v=7SYNuT-TMW8
Gladly will be FO4 not on the old generation on consoles .