While I still struggled against one of the toughest shard JMKs and his nearly full R8 god modded JMK team on manual (my LV team being R7 on avg), I just beat another JMK that's on similar relic levels on full auto (after the CDI on CAT) in about 1.5 minutes. That was even with DV who, tbh, doesn't really add much in the hands of the AI because it, for whatever reason, uses the AoE first instead of going into MM and feed LV with underestimated stacks and spread ability blocks. Shore might be the much better choice here - unfortunately LV is a "mastery" GL who wants all your chars to be on high relics to feed off them.