The Oneiros and Guardian get similar bonuses, but their roles as armor logi are a bit different because they aren’t identical. I was told the Guardian is meant to operate in small groups in a cap chain to sustain capacitor to each other, and any allies that need it, and repair allies’ armor. So armor and capacitor aid. The Oneiros is meant to be able to operate when separated from other logistics cruisers, but I’m told the capacitor can last a long time with no external help in most builds and it has boosts for accuracy for their allies, so it is armor and optimal range aid. Interestingly, if the Oneiros is in a fleet where 7/8 of the ships are Gallente, this will serve the fleet well since railguns will have difficulty running the capacitors dry if there isn’t a MWD running but they can certainly benefit the extra optimal range, so helping ships with armor and optimal range works well. I guess Oneiros isn’t meant to work with Caldari Kestrel, Jackdaws, and Ravens since not only are they shield tanks but their missiles don’t get extended time from a remote tracking computer.
A look at Large Armor Repairer II shows it Repair an ally in optimal range for 512 HP for 365 GJ, so that’s 1.402 HP/ GJ. Meanwhile, Imperial navy Armor Repairer can repair 1035 HP for 450 GJ, or 2.3 HP/ GJ. Of course large armor repair, local and remote, are generally battleship modules. But, logistics ship gets bonuses! A maxed out pilot in the Oneiros or Guardian gets a 65% reduction in fitting requirements and 75% reduction in capacitor use for remote armor repair modules, bringing a Large Armor Repairer II down to 68.4 GJ meaning one non-storyline module can heal 7.828 HP/GJ, very nice.
It’s easy to understand why the Guardian is meant to operate in a cap chain. It doesn’t have enough capacitor to keep 4 Large Armor Repairers going by itself, but if it gets a capacitor transfer, it can sustain a capacitor transfer and the armor repairers. This also gives immunity to neuts since it can just get more from its partner.
I’m not sure how the Oneiros is meant to be a more self sufficient armor repair ship. The Oneiros has 1925 GJ of capacitor, which is less than the Guardian so it will actually run out faster and it doesn’t have the option to cap chain. I’d be easy to understand how it would work independently if it had a capacitor of 7000 GJ, even if it had triple the time to recharge as the Guardian, but it’s base stats don’t seem to suggest more local sustainability. Or is the Oneiros supposed to use one of those extra mid slots for a capacitor battery?