Raiding in vanilla was VEEERRRRYYYYY different than even Wrath. Check the post in my sig for a long, long answer. Remember, most classes had one button rotations in vanilla.
This is roughly what the different classes do in DPS:
https://www.mmo-champion.com/threads...full-Naxx-gear
This is rough estimates without big buffs, but in vanilla the buffs and gear a toon has make an enormous difference.
Fury War 850 DPS
Fire Mage and Rogue 800-850
Warlocks 750
Hunters 700
Everything else 400-600
And the disparities get bigger the more buffs are applied.
You seriously need to go to youtube and look at videos of what raiding was actually like.
From my reminders thread, optimal ally build is roughly:
8 Warriors(2 full prot, 6 fury/prot)
4 Paladins (Mixed specs to get all blessing but they all healed since throughput was not overly effected by spec)
2 Hunters(To pull and use tranquilizing shot)
2 Druids (resto)
9 Rogues (spec? I think combat)
9 Mages(all fire)
2 Warlocks (for Curse of Elements and Curse of Ruin)
4 holy/disc priests