Honest question: If every player/class/job is equal,who is unique? (Gameplay topic)

[AttacKat]

[1]What sets apart one dps class from another besides the names of their skills and the graphics they show?
[2]If all tanks get the same line of hate generating skills, what makes the PLD and WAR different beyond their skill names and weapons?
[3]How is the sch and whm different from each other if they both heal the same way?
[4]If the Novus weapons are so powerful, what use is there for crafters?
[5]If the end game raid armors are so powerful, what use is there for crafters?

1. There are only 2 types of DPS, ranged, or melee. Other then that, in this game, they are the same since there is no applied limited in any of the dungeons. DPS A gets into the same DF queue just like DPS Z.
2. In ARR, none or whatsoever. There is only ONE tank, the one that can hold enmity. Unlike 1.x where WAR is the mob tank, and PLD is the boss tank.
3. Very little, if any.
4. None.
5. None.

Crafters are 2nd class citizen in ARR, if they are even considered important.

A combat class can gear up from level 1 all the way to BiS gear w/o the need for any crafted item. To make it even worst, in order to obtain the materials you need to craft the high end items, you need a combat class to get the loot from the dungeons. So, here are the loot options: a) BiS gear b) craft material, which would you pick?