SAM out classing all other DPS

[Nominous]

This is already an issue itself, but I'm not comfortable just discarding this piece of utility because we implicitly assume that "it's always there" (which shouldn't be the case, but that's how centralising NIN really is these days).

Another issue I have is that the multiplicative argument goes both ways- if you have a very strong base dps, you get more out of some buffs.

If the conversation is about a meta in a raid setting, and it is, then NIN is assumed to be in the party. Any group that cares about such things won't run without one. It has strong enmity manipulation, which is helpful for increasing Tank DPS through minimizing enmity combos needed. Somewhat relevant with healers, in relation to Smokebomb. TA is reliable, and it's DPS is at, or higher than a good portion of the other damage dealers.

At best, if we're talking PF/DF conditions (which doesn't matter for a meta conversation), SAM being the sole Slashing provider only benefits the two Slashing Jobs that don't have the ability or requirement to provide it for themselves- PLD and DRK. Assuming 2500 sustained for both Tanks over the course of a fight, that's ~500 rDPS contribution. Swap places for a NIN, and guess what? Still 500 contributed. The takeaway being- It's not exclusive to SAM, therefore it doesn't matter. Any argument saying that SAM gives a lot to a party with Slashing, can really be translated to the same argument with NIN. Except NIN has more than just slashing, so... yeah. The only imbalance here is that WAR is the clear loser, since it'll only ever, at most, benefit it's co-tank.