Play a BLM in any PvP match and tell me that any other DPS class needs a "buff".
The only thing BLMs are capable of doing is casting sleep and scathe, and I dare you to see how much dps you do with scathe alone.

As I said in another topic, I am a BLM Rank 15 with around 3200 HP and have been crit before from a Warrior's main for 1500-1600 dmg.