Because PD doesn't help black mages near as much. You're still relying on manawall to kill I believe, meaning you now have 1 pull per 10minutes, or you need 3 restore chests to take advantage of it. PD does not make you get hit for 0 (which makes it way better for Cleave than fanatics, you get a ton of TP from getting hit), and with that many mobs hitting you, you will have stoneskin broken (actually, how does Phalanx interact with PD? Never tried it...I guess if that turns PD'd hits into 0s, it works a bit better than I am saying) and then be interrupted on -agas. Past this, how are you pulling? I assume 1 blm pulls with manawall+SS, other black mage sleepgas, puller refreshes stoneskin before starting to aga? When you start requiring a restore chest to give to the smn every pull, you start losing out on manawalls for the black mages, as well as needing to potentially recover mp/convert after pulls. You and Thorny want PD to be a mutual luxury, but the fact of the matter is it's the only restore chest Cleave needs to operate quickly, whereas a BLM duo is already relying on restore chests to kill quickly at all, increasing the luck requirement. And I still maintain that the cleave group is killing slightly faster (and has a better comp for virtually any non-gravable NM than blm/rdm x2...though I could be wrong here, I dunno, never tried to blm burn a NM with manawall or anything). The only thing the black mage duo had going for it was less people and no red chests (as I see 3 as the minimum to efficiently cleave), and you're now arguing to add a 3rd to make the black mages just as durable...making the only benefit no red chests while killing slower, having a worse comp for most NMs, and requiring far more 2hr chests.
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