Actually GoA > Keepers > Hand > Talons, but anyway.
GoA just keep a low profile and most people don't know the awesomeness they are capable of performing.
HUGE EDIT
And since stratford wants me to elaborate, I'll tell him about the Keepers now. Tomorrow I can tell him about GoA also.
Keepers get: Hulking guy, Lazeran, Gervais, Baltus, Chirk as orderable level 45+ NPCs at least. From them Chirk has a script to spawn more peacekeeper law NPCs when in combat, so you actually have endless NPCs with you if you manage to keep him alive long enough for the script to fire.
How do you keep these NPCs alive? You give them equipment. When was the last time you saw any of them dressed in diamond or better armor? When was the last time a 8/8 battlespear was used by them? Hell, Lazeran loads with a full lightie only diamond suit unless it's taken by lighties through request. So given the right preparation these NPCs can be better tanks than any NPC the Black Hand gets(even the famous trio). And they certainly deal more damage than any NPC CoN gets(especially the famous trio that deals crappy damage - read: lack of weapons).
Conclusion? Keepers > Black Hand at tanking/damage output of their NPCs.
Apart from that, they get over 50 master level paladin NPCs spread around the city. What does that mean? Oh right, they have 50+ NPCs to choose and get from them sanctuary, armor, bless, frenzy etc. Yes, that's the common law NPCs of the Keepers, master level paladins who also come dressed up in full MR lightie suits(something no other tribunal gets afaik). Let's compare them to the level 25 council guards the Black Hand gets in the Moot. Better yet, let's not do it. You will look stupid.
Conclusion? Keepers > Black Hand at common law NPCs in all aspects.
On the matter of buffs now, Keepers get at least 1 orderable priest that keeps concentration and 1 orderable healer NPC(Percer, ~level 45) who can keep endless amount of buffs for no mana or concentration upkeep, just with a timer(that's how healer NPCs work). What buffs are readily available to the Black Hand? As it is now, level 25 shield/fly/infravision/armor. That's it. Nothing more. Not a single priest NPC. No way to get frenzy/sanc/anything else but only though charming priest NPCs. That has 3 downsides. First of all, it takes a LOT of effort to get these done. At least 1 hour for getting 2 priests charmed(considering repop times since people whined about charming unique NPCs so BH gets only NPCs that duplicate now). And what can 2 charmed priests do? That brings the second downside, the charm intelligence penalty. They cannot even have enough concentration to cast 1 sanctuary while sitting, even if they are given int mods. And let's not forget the 3rd downside, a single cancellation or remove compulsion spell destroys all the effort done. When all the Keepers have to do is wait for Exile's fast repop to happen and have endless amount of buffs from Percer again. I don't even count here the sorc NPCs the Keepers get.
Conclusion? Keepers > Black Hand when it comes to buffs.
So there you are newbie, I gave you facts that Keepers > Black Hand in all the aspects.
OK, not all. Player wise, Black Hand >>> Keepers.
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