Imagine a stronger Genbu with a lot more attack, and not as crazy defense, and you have this NM.
When my LS went for the NM, we took an alliance of 75s, and went 1/1 on the drop. If you're looking for Attack+12 gloves, buy some Tarasque Mitts+1. They're easier to get, and better.
If you compare him to pop NMs like Hakutaku, Shen, Gration, Culberry, Gesh Urvan, Kurrea, and others along those lines he's probably the most deadly. You can kill him in about 90-120 seconds because he'll wipe you otherwise. Chainspell Stun and spamming 300 TP WS with BLM and RNG going all out is the best way to do it.
We went 0/4 on drop, which is such an insult considering the expense of the pop item and sacrifice of time, supplies, and exp on the part of the people helping. I'm ready to leave him in peace.