The designation "any BoA" is just there to say basically it doesn't matter what you use. It is entirely viable to use a white or gray item, and the guide could be changed to reflect that. The same is true with Rogue weapons. We've pontificated over BiS a lot on these forums, but in all reality, the difference we are talking about is 15-20 damage a minute...hardly something a starting or intermediate twink would notice.
I'm thinking that with the changes in 5.4 and the allowance of a offhand int enchant it should be changed to say any 1H because at that point I could see no reason to use a 2H.
Thanks for the observations over the past couple of days guys. Keep em coming as we work to keep the guide updated and relevant