A (bad ?) way of tanking...

[Yunnie]

Damage is not the only parameter in hate. The dps, especially SMN and BLM, are über strong and deal monstruous damages, when compared to what can do a tank.
But a tank possesses damaging skills that generates more hate than other equal-damaging skills.
Even if a dps burst like crazy, the tank should be able to keep hate.
Even if it means spamming skills like Overpower, yes.

This is wrong. If a dps burst like crazy, before the tank has established threat, the tank cannot hold hate.
Example:
a paladin moves to get into range to use shield lob on a mob.
A black Mage uses raging strikes and swift cast.
The paladin gets into range as uses shield lob and claims 1 of the 3 mobs in a pack.
A bard uses for requiem.
The black mage uses flare (it instantly casts due to swift cast).

This black Mage will definatelly grab agro on all 3 mobs. The paladins shield lob is definatelly not enough agro to hold off these guys. So the mobs start heading towards the BLM.

The paladin probably reacts to this situation by provoking 1 mob and shield lobbing once GCD is off cooldown. (Which is 2.5 seconds after the first shield lob.)

The paladin must now chase the mobs back to the group. He has a few options here. He should probably use cover on the BLM but now there's now way to mitigate dmg. Due to this more healing is needed to keep the paladin alive, forcing the healer to heal more aggressively.

Now that the paladin has arrived to the dps, he can flash spam, which probably will take at least another 2 global rotations or he can start his combo rotation. But if the BLM is continuing to cast spells, he is probably creating more enmity, so more flashes are probably needed to generate enough hate. If the paladin starts his combo rotation instead of flashing, fast blade creates no additional agro then basic damage since it has no enmity modifier. Savage blade generates some additional enmity, but not enough to regain threat. After those 2 global cooldowns, (which is 5 seconds) he can rage of halone which will definatelly regain agro on 1 mob. But if the blm is still casting spells, the original provoked target as well as the other mob are now attacking the BLM. Once cover ends, the blm could, surecast if he wanted to, and continue to go full on but be is probably at this point, either casting his defensive cooldowns, running from the mob in a frantic back peddle, or he dies due the onslaught of the enemies. If he didn't cast surecast, then he is probably getting interupted, and in most of these conditions, he is experiencing a dps loss.

As you can see, it would take the paladin more then 6 globals at least to regain agro on a all mobs if a blm wishes to go full bore at the start of the fight (and continues to go at maximum burst). But all of this can be avoided if the dps are smart enough (and most are) to tempo up into the fight. Knowing how to throttle can be a dps increase in a situation where going full blast can be a dps loss. If they waited a second or two (which is less then 1 global cooldown) before casting a spell (without the use of swiftcast), all of this could have been avoided. The paladin could in that time position the mobs and get into Rythem. Also the less healing the healer needs to do, grants that healer to increase over a dps of the party (ie casting holy).

Later on when the tank can pull multiple mob camps, you would do well to remember to let the tank set the pace of the battle.