No matter what game you play, balance will ALWAYS be a source for debate. "Who does more damage here? Why? Why doesnt x-class do just as much?" Often time a class is often broken for you (the one who plays it, See: Maining) and OP to some (who "play" it, see: alt class).... or OP to people who have to deal with you in pvp (though pve and pvp is sperate here)
In this game there aeems to be debate about how classes are balanced based around their utility, and honestly, balancing around that is rather difficult. Sometimes utility can be too strong, sometimes not strong enough, this has to do with the TYPE of utility it is. So before anyone goes "Aww, NIN isnt meta anymore, but its now more in line" lets see exactly how in line it really is.
First lets knock out the ranged vs melee bit. Personally, i have never seen an mmo lower the dps of a class just because of "higher mobility" before this one. And personally, i dont think it should be. Also, the only reason why ppl compare classes "in a vacuum" is because for things like titania ex, you are not gonna run 4 melee dps. This means there are two slots for ranged, and nin isnt gonna be competeing with you for them.
Now utility:
1. Heal support utility (healing, heal buffing.)
2. Defense support utility (damage mitigation type)
3. Dps utility
(I would count a raise as heal support, because this way a healer doesnt have to use a CD or mana to do the raise)
It goes without saying that the more utility you have, you should do less dps. But the dps differenfe needs to be small enough that it is worth taking you for the utility, otherwise, it will default to top dps. If the only utility you have is heal/defensive, you should do less, but not so much the utility isnt worth it.
Dps utility is the HARDEST to balance around. By definition, it is supposed yo increase someones dps (individual or group) but this only works if it ACTUALLY provides this benefit.
This means, that a group will understand you doing less dps, because with your utility (provided they work with it) they should end up doing more. If you include pdps + contribution to = less than your other counterparts... the utility is useless. It may increase their pdps, but the raids over all dps is now less. It makes sense for having utility pdps is lower, but the dps utility if properly used should do MORE thab make up for it. This is why its hard, unlike other utility types, this one is meant to increase dps despite the fact that as a utility it should personally do less.