Sent you a PM, dunno if you saw/read before posting, but the PM system kinda destroyed the spacing and doesn't alow editing, so I may post here if you had like, or on the mod ideas/requests.
DR/DT doesn't affect fire or electrical damage? (Re-thinking now, it would be strange to have both it and Fire resist to 95). I'm still a bit lost at the stuff that claims to resist Energy Weapons, unless EW do extra damage in the form of fire and electricity as you hinted, that would make it harder to resist than normal weapons/explosives.
EDIT - Yet another question, does the 95 DT/DR means 95%, or just a flat 95? Its just that some things in the game claim a % (such as toughness perk), but I often get the feeling the game uses a flat 95 instead of making player receive only 5% damage...
PPA mod could use better documentation/explanations/orientation in-game, most stuff are just strange icons with a high price that makes the player go WTF! (Spoiler ahead) Every time I get the PA manual in Fort Constantine I always expect it to have some lore, with PPA I highly expected it to tell how to use the new/extravagant items.