My tank that is not even in full badge+heroic gear has no problems holding aggro- why would I need an aggro increasing enchant at the expense of something that keeps me alive longer?
A good +EH enchant is much better than a minor +threat enchant.
So again, if you find yourself too low on threat (as a paladin? really?) then you would consider the Accuracy enchant. Otherwise, for a tank, more EH is always better.
But could you point me to these theorycrafters that are suggesting Accuracy as the all around best
paladin enchant? I bold paladin because your argument makes a lot more sense for warriors or DKs than it does for paladins.
I refer you to
this maintankadin thread discussing weapon enchants.
Basically, if you need Threat, then accuracy is good. If you want EH, you use Blood Draining, if you want mitigation, you use Mongoose/+26 agility.
There is no all around best enchant, it depends on your gear and where you most often use it.
::edit:: Ah! I found the discussion on +hit gear:
In the best situation (very high strength, almost no hit), 10 hit generates around 20-25 TPS. Therefore, the hit portion of the Accuracy Enchant will give around 50-65 TPS. When a well geared prot pally puts out 7-8k TPS, 50-65 is a very minor addition.
A quick analysis: According to
Theck's Matlab TheorycraftStr: 29 TPS/10 str
Hit: 20-25 TPS/10 Hit (assuming low hit)
Crit: 8-12 TPS/10 Crit
AP: 16 TPS/20 AP
Accuracy: 50-65 TPS (Hit) + 20-30 TPS (Crit), 70-95 TPS total
Greater Potency (+65 AP): 52 TPS
Titanium Weapon Chain (+28 hit): 56-70 TPS
Greater Potency (+20 str): 58 TPS
So they are all similar in magnitude, with accuracy taking the lead, but getting worse as you gain hit.
Also remember that the hit cap for most adds is 5.4%, it's only for bosses that you need the 8% white cap, making hit less valuable in most situations.